Wire 1 has a length L and a circular cross section of diameter D. Wire 2 is constructed fromthe same material as wire 1 and has the same shape, but its length is 2L and its diameter is2D. Is the resistance of wire 2 the same as that of wire 1, twice that of wire 1, or half that ofwire 1?

Wire 1 has a length L and a circular cross section of diameter D. Wire 2 is constructed fromthe same material as wire 1 and has the same shape, but its length is 2L and its diameter is2D. Is the resistance of wire 2 the same as that of wire 1, twice that of wire 1, or half that ofwire 1?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 2OQ: Wire B has twice the length and twice the radius of wire A. Both wires are made from the same...

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Question

Wire 1 has a length L and a circular cross section of diameter D. Wire 2 is constructed from
the same material as wire 1 and has the same shape, but its length is 2L and its diameter is
2D. Is the resistance of wire 2 the same as that of wire 1, twice that of wire 1, or half that of
wire 1?

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