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Question

# Circuit 1 and circuit 2 consists of resistor R1 and R2 respectively. These resistors have same resistivity and thickness. Length of R1 > length of R2. If same voltage is applied across the circuits, which circuit has more current?

A
Circuit 1
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B
Circuit 2
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C
Equal currents
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D
Insufficient information
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Solution

## The correct option is A Circuit 1Resistance is given by: R=ρlA where: R: Resistance l: Length of the wire A: Area of the cross-section of wire ρ: Resistivity of the material. The resistors have the same material and thickness. Hence, R∝l Length of circuit 1 is more, so is it's resistance.

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