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Paper 2 · November 2016 · Work, Energy and Power

A light bulb is labelled 240 V, 60 W. Calculate the resistance of the bulb using R = V²/P.

A3600 Ω

B960 Ω

C4 Ω

D240 Ω

Explanation

R = V²/P = 240²/60 = 57600/60 = 960 Ω.

Derived from ZIMSEC Physics 5055/2 Paper 2 Theory, November 2016, Q5

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