Electricity

CBSE Class 10 · Science · 23 past questions

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1. Q1 2026

   The resistance of a wire of 0.01 cm radius and 1.0 cm length is 7 $\Omega$. Calculate its resistivity.

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2. Q11 2025

   A wire of length 'l' is gradually stretched so that its length increases to $3l$. If its original resistance…

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3. Q14 2024

   In case of four wires of same material, the resistance will be minimum if the diameter and length of the wire…

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