Physics, asked by vusalsaroz17, 1 year ago

in order to quadruple the resistance of a wire of uniform cross section a fraction of its length was stretched uniformly till the final wire length has become 1.5 times the initial length.calculate the fraction

Answers

Answered by Rosedowson
10
Hi..
Hope this helps u!!
Attachments:

Rosedowson: Yoday itself..
Rosedowson: *Today
vusalsaroz17: ok bruh
Rosedowson: I got it..have a look..if u have any doubt..ask me..
vusalsaroz17: bro answer is 1/4 and it got wrong but i didn't understand the first relation of resistance .how come?
Rosedowson: Dude just ignore it .i will ask my mam 2 morrow and let u know..
Rosedowson: Is it urgent 2 u??
Rosedowson: Just check ur answer i think it should be 1/ 8..
vusalsaroz17: u can give me the ans tomorrow but i still can't understand the first relation.I am WEAk in maths it seems
vusalsaroz17: derive the relation R=N^2*length .Can u now?
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