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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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The answer is (d) 25

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