21. A piece of wire of resistance R is cut into n equalparts. These parts are then connected in parallel.If the equivalent resistance of parallel combinationis R, thenISisR'

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Q. A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is

R^{^{'}}

, then the ratio

\frac{R^{^{'}}}{R}

is:

Question 1
A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R', then the ratio $\frac{R}{R^{'}}$ is:

(a) $\frac{1}{25}$
(b) $\frac{1}{5}$
(c) 5
(d) 25

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