1) The wire of length L and resistance R is
stretched so that its radius of cross-section
is halved. What is its new resistance?
(A) 5R
(C)4R
(B) SR
(D) 16Rwhat options will be correct
Answers
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4
Answer:
its resistance will increase 4 times.resistance is directly propotional to length and inversly propotional to the area of crossection.
Explanation:
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