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A stand-by generator is connected to fifteen 40 W lamps and musician's 600 W amplifying...

Physics
JAMB 1980
A stand-by generator is connected to fifteen 40 W lamps and musician's 600 W amplifying system. How much energy is used if the generator runs for 6 hours?
  • A. 3.84k Wh
  • B. 7.20k Wh
  • C. 8.40k Wh
  • D. 12.00k Wh
  • E. 14.56k Wh
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Correct Answer: Option B
Explanation
Total power = (15 x 40) + 600

= 1200 watts

Energy(kWh) = \(\frac{1200}{1000}\) x 6

= 7.2 kwH
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts