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Variable Resistors Categories
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150Pcs Variable Resistor,Vertical PCB Preset Trimmer Potentiometer,100ohm-1Mohm Vertical Resistor, Blue White Trimmer potentiometer features 3 terminals, PCB mount, it can easily fit in a solderless breadboardBest Value Cryfokt 
Variable Box, 0‑9999.9 Ohm Ohm Resistor Substitution Box Simple Adjustable Resistor Decade Box for Physical Teaching Sch Durable Precision Resistance Box: The variable resistor is crafted from high strength ABS material, this resistor box ofSwpeet 
Swpeet 57Pcs Single Linear Rotary Taper Potentiometer with Plastic and Aluminum Alloy Knobs Kit, 5K 10K 50K 100K 250K 50 🥇 【What You Get】: In this kit, you will get 14Pcs 7 sizes 5K 10K 50K 100K 250K 500K 1M Ohm Potentiometer, 2Pcs of eachECSiNG 
ECSiNG 10pcs 3Pin B10K Variable Resistors 45x10x6mm for Volume and Light Adjustment Precise Adjustment: Set of 10pcs 3-pin B10K variable resistors, ideal for smooth volume or brightness control.fasient 
10Values 500 ohm to 1M ohm Carbon Film Horizontal Trimpot Pot Potentiometer Assortment Kit Variable Resistor with Plasti Mingzhe 
100 Pcs Variable Resistor 10 Values 500R to 1M RM065 Blue White Trimmer Potentiometer Assortment Kit TV Video MP3 DVD Of [Multiple Uses] Widely used in television, video, mp3, mp4, vcd, dvd, telephone, and office automation equipment, makingLrocaoai 
0-9999 Ohm Simple Resistance Box Variable Decade Resistor Teaching Instrument Used to measure unknown resistance.Reland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B10K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forVGOL VGOL 4pcs 10K Ohm WH138 Potentiometer Rotary Linear Variable Resistors with On Off Switch 6x12mm Shaft for Volume Contro Versatile Control Function: 10K Ω WH138 potentiometers with integrated ON/OFF switch handle both volume and tone adjustmGeneric 100pcs 10 Values Variable Resistor 6mm Potentiometer RM065 Preset Carbon Film Horizontal Trimmer Assortment Kit with Sto It's widely used in television, video, Mp3, Mp4, VCD, DVD, telephone, office automation equipment, information communicaYDuupxe YDuupxe 100pcs 10 Values 500ohm to 1m, Trimpot Variable Resistor 10k Ohm Horizontal Film Variable Resistor Potentiometer Resistor detail: 500 ohm, 1K ohm, 2K ohm, 5K ohm, 10K ohm, 20K ohm, 50K ohm, 100K ohm, 200K ohm, 1M ohmKUNLONGSKY 0-99999.9 Ohm Simple Resistance Box Variable Decade Resistor Teaching Instrument Teaching Resistance Box Used as electromotive force and internal resistance for measuring power supply.PerGar Decade Resistance Box, Adjustable Decade Resistor, 0-9999.9 Ohm Variable Resistance Box, Resistance Lab Resistor Substit Versatile Application: Rated at 1W, suitable for a wide range of resistance measurement applications, ensuring reliableKUNLONGSKY 0-9999 Ohm Simple Resistance Box Variable Decade Resistor Teaching Instrument Used to measure unknown resistance.Reland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097G 6pins,B10K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerLuocute Luocute Adjustable Decade Resistor, 0-9999.9 Ohm Variable Resistoring Box with Connecting Wire, Single Resistors for Phy Precision Box: Made of high strength ABS, ensuring stability and durability, with a wide range of adjustable from 0 to 9EMSea EMSea 2 Sets B10K Linear Taper Rotary Potentiometer WH148 10 K Ohm Single Turn Carbon Film Variable Resistor with XH2.54 Resistance Value : 10Kohm; Type : Single linear rotary. Adjust the resistance by rotating the shaft, and the product isULTECHNOVO ULTECHNOVO 30pcs Variable Resistor Ohm Horizontal Trimmer Resistor for Breadboard DIY Accessory Replacement Potentiomete Variable-- resistance adjustable design, can be used on printed circuit boards or device interior.uxcell uxcell 3296W-103 10K Ohm Trim Pot Potentiometer Variable Resistors 10Pcs Product Name : PotentiometerVariable Resistors;Type : 3296W-103;Resistance : 10K ohmaikoolwer aikoolwer WH148 Potentiometer 5K 10K 20K 50K 100K Ohm 3Pins Set 60PCS Variable Resistors Plum Cap Aluminum Alloy Rotary 【Product Name】WH148 Model with B5K-B100K Resistances.Includes multiple resistance options (B5K B10K B20K B50K B100K) audReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 3 pins,B10K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerHJW Electronics Variable Resistor Potentiometer Solder Lug Splined Shaft Audio Volume Control Logarithmic A T18SL (A100K) Replacement splined shaft audio volume controluxcell uxcell Potentiometer With Switch B10K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper RV097NS 2pcs 1. Model: RV097NS, 10K ohm, Tolerance: +/-10%, 5 Terminals, Single Linear, Suits Most Standard Knobs.（this item do not iLuojinLuoda LuojinLuoda 30 Values 1% Resistor Kit Assortment with 1/4W 10 Ohm-1M Ohm Range in Pack of 600 Pieces Compliant with RoHS 【Premium 1% Tolerance Resistors】 This kit contains 600 high-quality 1/4W metal film resistors with ±1% precision, featursourcing map sourcing map 20Pcs 1M Ohm Multiturn Trimmer Potentiometer, 3296W Top Adjustable Variable Resistor High Precision Potenti This multi-turn precision resistor potentiometer is for electronic design and industrial control circuits. Its multi-turViaGasaFamido Variable Resistor, Trimmer Potentiometer Assortment Kit 10 Values 500R To 1M Blue White Practical for VCD DVD EXCELLENT MATERIAL: The variable resistors are made of excellent carbon composite material, which has good durability anuxcell uxcell Fader Variable Resistors Mixer 45mm Straight Slide Potentiometer B100K Ohm Single Channel 2pcs Model: B type of Linear Potentiometers, Can be used in Dimming TuningALLECIN ALLECIN 50Pcs WH148 Potentiometer Kit 1K 2K 5K 10K 20K 50K 100K 250K 500K 1MK Ohm 15mm Shaft Single-Joint Linear Potenti ALLECIN WH148 Potentiometer Kit - Perfectly suitable for variety electronic experiments.Zovfam 150 Pcs 15 Value 100 ohm- 2M ohm Trimpot Variable Resistor 6mm Potentiometer Assortment Kit Brand New and High Quality Variable Resistor Assortment KitEJVFN IBVR 5K Variable Resistor Kit – 6 Pack, Durable & Adjustable, Ideal for Multiplexed Doorlock and Security Systems, Unive Easy and Quick Adjustment: Save time with effortless dialing of resistor values. This kit features 0 to 5k adjustable reBaxnore Baxnore 100 Pcs 10 Values Variable Resistor, Trimmer Pot Electronic Component, Adjustable Trimmer Pot Potentiometer with Versatile Range: This set of variable resistors offers ten distinct resist values ranging from 500 ohms to 1M ohm; EachXlihdzum Xlihdzum 30 Values 1% Tolerance Resistor Assortment - 600 Pieces 1/4W Metal Film Resistors Kit with 10Ω-1MΩ Range, Organ 【High Precision 1% Tolerance Metal Film Resistors】 Achieve accurate and reliable circuit performance with this premium rRaogoodcx Raogoodcx Variable Resistor Assorted Kit 15 Value 300pcs Potentiometer Kit 100Ω, 1KΩ, 10KΩ, 100KΩ, 200Ω, 2KΩ, 20KΩ, 200KΩ, 500Ω, 5KΩ, 50KΩ, 500KΩ, 1M,2M ，3KPotentiometeruxcell uxcell 5Pcs Straight Single Linear Slide Potentiometer 4 Pin B50K 50mm(L) 30mm Travel 4x10mm Handle Fader Variable Resis Sliding potentiometers are mainly used to adjust the current or voltage in circuits. By moving the sliding rod, the resiCRDARAAV DC 50V 10 Values 500ohm-200Kohm Trimmer Potentiometers Plastic Variable Resistors Assorted Kit DIY Crafting Electronic C Well crafted:This timmer potentiometers features fine workmanship and has good conductivity , providing good performanceYBJULT 500W BC1 high Power rheostat rotary variable wire wound Disc shape Adjustable resistor Sliding 1R 2R 3R 5R 10R 15R 20R 2 Blower Motor Fan ResistorsTEHAUX TEHAUX Resistance Box 0-9999 Ohm Adjustable Variable Resistor Substitution Box Physical Experiment Tool for School Scien Stable Resistance Adjustment: The Resistor box teaching instrument in the Measurement Kits category offers precise variauxcell uxcell Potentiometer 50K Ohm Variable Resistors Single Turn Rotary Carbon Film 10pcs 1. Model: 0932, 50K ohm, Tolerance: +/-20%, 3 Terminals, Single Linear, Suits Most Standard Knobs.（this item do not inclCryfokt Cryfokt Automotive Circuit Test Leads Kit, Multimeter Electrical Testers Diagnostic Tools with Variable Resistor for Car [User Friendly Design] Designed for convenience this kit features led lights to monitor control signals of hall photoeleSHINEOFI SHINEOFI 10pcs Potentiometer Single Turn Metal Film Variable Resistors for Amplifier Potentiometer Audio Circuits Single linked amplifier potentiometer:main used to control electrical devices such as volume controls on audio equipmentSHINEOFI SHINEOFI 10pcs Potentiometer Single Turn Metal Film Variable Resistors for Amplifier Potentiometer Audio Circuits Single linked amplifier potentiometer:main used to control electrical devices such as volume controls on audio equipmentReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097NS 5pins,B500K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097G 6pins,B5K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097G 6pins,B50K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097G 6pins,B20K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097G 6pins,B1K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 3 pins,B20K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 3 pins,B50K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 3 pins,B500K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 8pins,B100K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometeruxcell uxcell® WH148 100K Ohm Variable Resistors Dual Rotary Carbon Film Taper Potentiometer 5pcs Model: WH148uxcell uxcell Potentiometer 10K Ohm Variable Resistors Single Turn Rotary Carbon Film 10pcs 1. Model: 0932, 10K ohm, Tolerance: +/-20%, 3 Terminals, Single Linear, Suits Most Standard Knobs.（this item do not inclMobestech Mobestech 3386P 1K 3-Pin Trim Potentiometer with Knob 10Pcs for Electronics Prototyping and Breadboard Variable Resistor Multi-scene support: the breadboard trim potentiometer knob’s adaptability ensures it meets the requirements of variousSHINEOFI SHINEOFI 10pcs 3386p-103 10k Ohm Trim Potentiometer with Knob, 3-pin High Precision Variable Resistor for Breadboard Ele Comprehensive usability: suitable for vertical potentiometer knob usage in testing equipment, industrial machines, suppoReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 8pins,B1K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 8pins,B500K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097N 8pins,B50K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097NS 5pins,B20K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerHUABAN (Pack of 3) WH148 Horizontal Triplet Gang 9 Pins Potentiometer B1K 1K Ohm Variable Resistors 15mm knurled Shaft Aluminum Linear Taper B PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097NS 5pins,B5K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097NS 5pins,B50K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerReland Sun RELAND SUN 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper Potentiometer (RK097NS 5pins,B1K) 5pcs RK097N RK097NS RK097G Variable Resistors Rotary Carbon Film Taper PotentiometerMXNKLJ 10PCS Trimming Potentiometers, Variable Resistors Breadboard Trimpot with Knob 1K 10K 20K 50K 100K(100K) PotentiometersShutao 4Pcs 50W 6Ohm Load Resistor Turn Signal Blink LED Fix Fast Flash Error Code Flickering Automotive Replacement Resistors LED resistor turn signal not easy to deform or break, 50 watt 6 ohm fix LED bulb fast hyper flash turn signal blink erroAmosfun Amosfun 200 Ohm Slide Rheostat with Stable Performance and High Current Capacity, Iron Material Variable Resistor for Vo Comprehensive lab integration: this slide resistor 200 ohm easily incorporates into standard physics teaching tools, facSitojart Star 5Sets B100K Linear Taper Rotary Potentiometer WH148 100K Ohm Single Turn Carbon Film Variable Resistor with XH2.54-3 Pin 5Sets B100K Linear Taper Rotary Potentiometer WH148 100K Ohm Single Turn Carbon Film Variable Resistor with XH2.54-3 PinE-Projects E-Projects - 10k Ohm Variable Resistor Trimmer Pot, Top Adjustment Potentiometer (Pack of 25) Top AdjustmentGeneric XYWHPGV WH138 Potentiometer with Switch B500K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper 2pcs(7c4d4 8eb 1. Model: WH138-4, 500K ohm, Tolerance: +/-10%, 5 Terminals, Single Linear, Suits Most Knobs.（this item do not include Kiplusmile iplusmile 10K Ohm Trim Potentiometer P103 3 Terminal Pin Blue Adjustable Variable Resistors Trimmer Potentiometer with K This product is a knob potentiometer, which is easy to operate.MXNKLJ 3296W Multiturn Trimmer Potentiometer Kit High Precision 3296 Variable Resistor With Free Box Electronic Diy Kit PotentiometersMXNKLJ 50Pcs 3296W Multiturn Trimmer Potentiometer Kit High Precision 3296 Variable Resistor 500R 1K 2K 5K 10K 20K 50K 100K 200 PotentiometersReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B1M) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B250K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B100K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B2K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B1K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B20K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B50K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forReland Sun RELAND SUN 5pcs WH148 Variable Resistors 3pin Rotary Carbon Film Taper Potentiometer (B500K) Model: WH148,Dual Turn potentiometer, linear diversify of resistance,make with two sets of resistor substrates, easy forCATIEBYE CATIEBYE 10pcs Single Turn Sealing Potentiometer with Pin Shaft for Audio Amplifier Wear-Resistant Shaft Rotary Variable Adjustable resistors--hard-wearing, specially designed potentiometer with momentary push- which can turn off the sound tGeneric XYWHPGV Trimmer Potentiometer Sets Top Adjustment Horizontal Variable Resistors 1 sets 500R,1K,2K,5K,10K,20K,50K,100K,20 1. Resistance Value: 500R,1K,2K,5K,10K,20K,50K,100K,200K,1MOhm, Tolerance:+/-10%， (500R,1K,2K,5K,10K,20K,50K,100K,200K,1YBJULT 1PC 300W RX20 high-power variable resistor load aging adjustable resistance winding resistance 10R-150R(30R) Blower Motor Fan Resistorsuxcell uxcell 2Pcs 10K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knobs Model: WH148ThsGivingStore 100pcs 10 Values RM065 Variable Resistor Potentiometer Kit, 500 Ohm - 1M Ohm 6mm Vertical Pin Blue and White Potentiomet ✅【Packaging Quantity】Includes 10 specifications, 10 pieces for each model, 100 pieces in total. Resistance range: 500 OhYBJULT 400W RX20 high-power variable resistor load aging adjustable resistance winding resistance 10R-150R(150R) Blower Motor Fan ResistorsOSALADI OSALADI 280PCS Potentiometer Kit 14 Values of Variable Resistors Assorted 20-piece Configuration for Electronics Project Potentiometer--total 280 pieces (14 values * 20pcs),variable resistorReland Sun RELAND SUN 5pcs 3pin WH148 1K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer 5pcs 3pin WH148 1K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometeruxcell uxcell 3Pcs 5K Ohm Variable Resistors SingleTurn Rotary Carbon Film Taper Potentiometer with Knobs Model: WH148Shutao 4Pcs 50W 6Ohm Load Resistor Turn Signal Blink LED Fix Fast Flash Error Code Flickering Automotive Replacement Resistors LED resistor turn signal not easy to deform or break, 50 watt 6 ohm fix LED bulb fast hyper flash turn signal blink erroUTSAUTO UTSAUTO 600pcs 30 Values Metal Film Resistor Kit 1/4W 1%(100Ω-1MΩ) Metal Film Resistor: Excellent Noise Suppression, Moisture-Proof, High Temperature Resistance And Long Working Life.OSALADI OSALADI 280PCS Potentiometer Kit 14 Values of Variable Resistors Assorted 20-piece Configuration for Electronics Project Potentiometer--total 280 pieces (14 values * 20pcs),variable resistoruxcell uxcell 3Pcs 5K Ohm Variable Resistors SingleTurn Rotary Carbon Film Taper Potentiometer with Knobs Model: WH148Generic XYWHPGV 10 Pcs 100K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knobs(213b0 bacbe 4aa Model:WH148;Single potentiometer, linear diversify of resistanceGeneric XYWHPGV WH148 3Pcs 1K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knob(9e9ca ed5fd cf Model:WH148;Single potentiometer, linear diversify of resistanceGeneric XYWHPGV 6Pcs 100K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knobs(9af7a f3381 fb9ac Model:WH148;Single potentiometer, linear diversify of resistanceGeneric XYWHPGV 2Pcs 100K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knobs(f8983 aca72 ebec8 Model:WH148;Single potentiometer, linear diversify of resistanceGeneric XYWHPGV 15Pcs 10K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knobs(8b5d4 1113a b1fa1 Model:WH148;Single potentiometer, linear diversify of resistanceGeneric XYWHPGV 10Pcs 20K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knob(bf6c2 465de 7a04a Model:WH148;Single potentiometer, linear diversify of resistanceGeneric XYWHPGV 8Pcs 5K Ohm Variable Resistors Single Turn Rotary Carbon Film Taper Potentiometer with Knobs(04203 140b2 5d580 b Model:WH148;Single potentiometer, linear diversify of resistanceAcxico Acxico 1Pcs 0-9999 Ohm Simple Resistance Box Precision Variable Resistor For Physical Electricity Experiment Teaching Can be verified part of the circuit Ohm's law.