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A current of 0.5A flows through a resistor when connected to a 40-V battery. How...

Physics
JAMB 1987

A current of 0.5A flows through a resistor when connected to a 40-V battery. How much energy is dissipated in 2 minutes?
  • A. 1200J
  • B. 1500J
  • C. 2400J
  • D. 96000J
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Correct Answer: Option C
Explanation
Electrical energy = IVT

= 0.5 x 40 x 2 x 60

= 2400J

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