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25-03-2024
Physics

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Acylindrical road has resistance R, length L, and diameter D. If both the length and the diameter are doubled, then the new resistance Rnew, will be:
A. Rnew=4R
B. Rnew=2R C. Rnew=R
D. Rnew = 1⁄2 Rnew

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