iv) The wire of length L and resistance R isstretched so that its radius of cross-sectionis halved. What is its new resistance?(A) 5R (B) 8R(C)4R(D) 16R
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Answer:
D) 16R is the answer
Explanation:
where, L is the length of conducting wire
V is the volume of conducting wire
A is the cross section area of conducting wire
R is the resistance of conducting wire
r is the radius of conducting wire
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