An electric refrigerator rated 400w operates 8hour/day . What is its cost of energy to operate it for 30 days at Rs4.00 per kWh? Express this amount of energy in its S.I unit.
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Answer:
power:-400w
Total time :- 30×8:-240hr
1 kwhr= ₹4
Explanation:
Electrical energy :- power×Time
:- 400w×240hr
:-96000whr
In Kwhr:- 96000/1000 :- 96kwhr
96kwhr :- 96× 4:- ₹384
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