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JEE Main 2024 (27 Jan, Shift 1) · Combination of Resistors

Combination of Resistors question from JEE Main 2024 (27 Jan, Shift 1)

Q18JEE Main 2024 · 27 JAN · SHIFT 1Easy

Combination of Resistors

A wire of resistance $\text{R}$ and length $\text{L}$ is cut into 5 equal parts. If these parts are joined parallely, then resultant resistance will be:

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Answer: (a)

Each part has resistance $\dfrac{R}{5}$ (since $R \propto l$ ).
5 equal resistors in parallel: $R_{eq} = \dfrac{R/5}{5} = \dfrac{R}{25}$
So the answer is (a) $\dfrac{R}{25}$ .

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