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Combination of Resistors question from NEET 2025

Q7NEET 2025Easy

Combination of Resistors

A wire of resistance $R$ is cut into 8 equal pieces. From these pieces two equivalent resistances are made by adding four of these together in parallel. Then these two sets are added in series. The net effective resistance of the combination is:

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Answer: (a)

Each piece has resistance $R/8$ .
Four in parallel: $\dfrac{R/8}{4} = \dfrac{R}{32}$ .
Two such sets in series: $2\times\dfrac{R}{32} = \dfrac{R}{16}$ . The answer is (a).

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