A stand-by generator is connected to fifteen 40 W lamps and musician’s 600 W amplifying system…

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

Correct Answer: Option B

Explanation

Total power = (15 x 40) + 600

= 1200 watts

Energy(kWh) = (1200/1000) x 6

= 7.2 kwH

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