Question

a wire which has resitivity R is cut into 5 smaller pieces these parts are combined in parallel if the equivalent resistivity is r then ratio of R/r is
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Answer 1

Answer:

Resistance of each part will be R/5.

Equivalent resistance will be

1/R' = 5/R + 5/R + 5/R + 5/R + 5/R

So, R'=R/25

R'/R=1/25

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