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A potential difference of 6v is used to produce a current of 5A for 200s...

Physics
JAMB 1978
A potential difference of 6v is used to produce a current of 5A for 200s through a heating coil. The heat produced is
  • A. 4800 cal
  • B. 6000 cal
  • C. 2400J
  • D. 240k cal
  • E. 6000J
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Correct Answer: Option E
Explanation
Heat energy = Elect. energy = Ivt

= 5 x 6 x 200

= 6,000J
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