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Which of the following would decreasethe resistance to the flow of an electric current through a body?  A. Shortening the conductor   B. Lengthening the conductor   C. Using a conductor with a smaller
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1 vote
Which of the following would decreasethe resistance to the flow of an electric current through a body? 

A. Shortening the conductor   B. Lengthening the conductor   C. Using a conductor with a smaller cross section   D. Heating the conductor

User Keith V
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5.8k points

2 Answers

4 votes
Ohm's 2nd Law:

Resistance = ro (coefficient) x Length/Area

R = ro * l / a

Shortening the Conductor: Length decrease, Area become greater than Length, Ro is a constant, so it doesn't change. Result: The Resistance will be lower.

Answer: A.
User Augusto Dias Noronha
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5.4k points
3 votes
A (shortening the conductor)
Since resistance = (resistivity × length) / cross sectional area, decreasing length decreases resistance
User Amir Hedieh
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4.9k points
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