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A resistor connected to a 12V battery draws a current of 2A. The energy dispatched...

Physics
JAMB 2018

A resistor connected to a 12V battery draws a current of 2A. The energy dispatched in the resistor in 5 minutes is ___.

  • A. 3,600J
  • B. 6,000J
  • C. 7,200J
  • D. 14,400J
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Correct Answer: Option C
Explanation

Power drawn by the resistor = IV = (2)(3) = 24W = 24J/s

  Energy dissipated = power × time = (24)(5)(60) = 7200J

There is an explanation video available below.


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Explanation Video

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JAMB CBT Software 2025 - Free Download
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Myschool's prices for products & services are going up again in February - Buy what you need now
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
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