Physics, asked by Reddyteja7442, 11 months ago

If the length of wire is half and its cross section area is doubled then what would be the resistance of wire given initial resistance of wire is r

Answers

Answered by manju5177

3

Answer:

r/4

Explanation:

[r= K l/a...]

If length is l/2, area is 2a then

R =K l/4a

Then resistance is R =r/4

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