1. Which of the following cannot be charged easily by friction? (a) A plastic scale (b) A copper rod (c) An inflated balloon (d) A woollen cloth.

A.VERIFIED ANSWERfact-checked by tutors

Soln:

The answer is (b) A copper rod.

Explanation:

Only non-conducting materials can be easily charged by friction. Copper is a highly conducting material. Therefore, a copper rod cannot be charged easily by friction

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