If the charge of electricity is K wh is N4 what... - JAMB Physics 2011 Question
If the charge of electricity is K wh is N4, what is the cost of operating an electrical appliance rated 250 v,2 A for six hours?
A
N28
B
N12
C
N16
D
N24
Ask EduPadi AI...
Correct Option: B
Energy consumed = power x time = lvt = 2 x 250 x 6hr = 300 wh = 3 kwh but 1 kwh = N4
3 kwh = 3 x N4 = N 12
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