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Q120. A wire of radius r has a resistance R. If the wire is stretched so that its radius becomes r/2, what is its new resistance?

Physics — NUST Mock By IBAGRADS 1 — Question 120 of 200

A. 2R
B. 4R
C. 16R
D. Zero

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A wire of radius r has a resistance R. If the wire is s... | Physics MCQ #120 | Examora | Examora