Physics, asked by PranayKushwaha1440, 1 year ago

Two copper wire a and b are of equal masses the length of a is doubled

Answers

Answered by joshihimanshu46
2
hey buddy,

if the length of wire a would be doubled, its area of cross section will be half as compared to wire b.

so, now the resistance of wire a would be 4 times as compared to wire b.

hope that helps✌️✌️✌️
Answered by nain31
3
ANSWER..

First, Secondly
Let length l1 =l. length l2 =2l
area A1=2a. area A2=a
resistance if was r, *ur question is incomplete *
r1/r2=l1/A1×A2/l2
x/r2=l/2a*2l/a
x/r2=1/4
r2=4x.
So, the resistance will be 4 times of the original one.

Hope it helps
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