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The resistance of a 240V, 60 watt electric filament bulb is

Physics
JAMB 1981
The resistance of a 240V, 60 watt electric filament bulb is
  • A. 0.25\(\Omega\)
  • B. 480\(\Omega\)
  • C. 60\(\Omega\)
  • D. 240\(\Omega\)
  • E. 960\(\Omega\)
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Correct Answer: Option E
Explanation
power = IV

power = \(\frac{V^2}{R}\) = 60

= \(\frac{240^2}{R}\)

= 960\(\Omega\)
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