Physics, asked by ayush7777, 1 year ago

please solve question of current

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ayush7777: any 1 to solve it

Answers

Answered by 9552688731
0
ANSWER IS

B) 13.5

BECAUSE WE KNOW THAT

R (DIRECTLY PROPORTIONAL TO ) CONDUCTERS LENGTH

SO WHEN WE INCREASE CONDUCTERS LENGTH THEN IT'S RESISTANCE WILL BE INCREASED BY THREE TIME SO

4.5×3 = 13.5 ohm

ayush7777: ans. is 40.5
Answered by dhruvgupta1699
1
Bro when the cross section decrease then resistance will increase n² times to original resistance
So the answer is 40.5

9552688731: CROSS SECTION REFFERS TO BREADTH OF THE CONDUCTOR HERE IS GIVEN LENGTH
ayush7777: please elaborate
dhruvgupta1699: R`=n²×R, R`= 3²×4.5=40.5
9552688731: sorry i am sslc student i don't know the answer that my mistake
ayush7777: thnx
dhruvgupta1699: Ohh it's ok
9552688731: thanks bro for suggestion
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