A copper wire of resistance is cut into ten equal lengths

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

A copper wire of resistance RR is cut into ten equal lengths. Two pieces are joined in series, and five such combinations are joined in parallel. The new combination has resistance (a) RR (b) R4\frac{R}{4} (c) R5\frac{R}{5} (d) R25\frac{R}{25}

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