demo 26 - L R= A Variable Resistor This is a resistor that...

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L R A ρ = Variable Resistor This is a resistor that consists of a wire of constant cross section A and length L o . The wire has a sliding contact C which allows us to change the wire effective length L , and therefore the resistance R from 0 to a maximum value R max . + - V L C Symbol:
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Resistivity ρ
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This note was uploaded on 03/26/2010 for the course PHY 108 taught by Professor Iashvili during the Spring '08 term at SUNY Buffalo.

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demo 26 - L R= A Variable Resistor This is a resistor that...

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