A length of wire has resistance R. The same wire twice as long has resistance
A)R/2.
B)R.
C)2R.
D)none of the above

Name: A length of wire has resistance R. The same wire twice as long has resistance A)R/2. B)R. C)2R. D)none of the above
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Question

Quizplus · Accepted Answer

The resistance of a wire is directly proportional to its length, so if the length of the wire is doubled, its resistance will also double. Therefore, the resistance of the wire that is twice as long as the original wire is 2R.

A Length of Wire Has Resistance R