Physics 2008 Discuss

A generator is on daily use and in the process, ten 60 W and five 40 W...

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Question 30
A
0.96 kWh
B
19.2 kWh
C
9.60 kWh
D
19.20 kWh
Explanation
Energy consumed = power x time
= (60 W x 10 + 40 W x 5) x 24 h
= (600 W + 200 W ) x 24 h
= 800 W x 24h = 19200 w h
= 19.2 kWh

Correct option: B

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