Question

What happens to resistance of a wire when its length is doubled (keeping area constant)?

Q: Answer-What happens to resistance of a wire when its length is doubled (keeping area constant)?

Resistance RL, as per the formula R LA. So, if length becomes twice and cross sectional area stays same, resistance becomes 2R. This relationship is critical in designing electric circuits and wires. It also helps explain how electric heaters work.

A Doubled

B Halved

C Quadrupled

D Same

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What happens to resistance of a wire when its length is doubled (keeping area constant)?

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