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
Explanation
Correct Option
bVideo Explanation
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Discussions (10)

deymolah
10 years ago
that means the question is not correct, the voltage is supposed to be 250 not 2.50

MACCIFO
1 year ago
Are we not supposed to change the hours to seconds. i almost fail this very question because of that 



DominicAfam
1 year ago
Given,
V=250
I=2
1kw/h=N4
P=IV
P=250Ć2
P=500 watt
1kw =1000watt
If 1000w/h=N4
500w/6hours is =x? š
Cross multiply
1000x=500Ć6Ć4
1000x=12000
Divide both side by 1000
x=12
That is N12š
āļø




