A. N2.50
B. N3.20
C. N6.50
D. N9.60
Correct Answer: Option A
A. N2.50
Explanation
Power = 100W; Voltage = 240V; Time = 5 hours
Total energy used = Power x time = 100 x 5 = 500wh
converting to kwh, we have
500/1000=0.5kWh×N5=N2.50
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