3. In a circuit, a variable resistor is to be connected across a potential difference of 60 V to allow the current to be adjusted in the range from 40 mA to 100 mA. Over what range must the resistance vary?
3. In a circuit, a variable resistor is to be connected across a potential difference of 60 V to allow the current to be adjusted in the range from 40 mA to 100 mA. Over what range must the resistance vary?
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter20: Electric Current, Resistance, And Ohm's Law
Section: Chapter Questions
Problem 14CQ: The power dissipated in a resistor is given by P = V2/R, which means power decreases if resistance...
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Current, Resistance, and Circuits
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