Jamb 1978
If NEPA charges 5k per kWh, what is the cost of operating for 24 hours a lamp requiring 1A on a 200V line?
A. 24K
B. 55K
C. 40K
D. 26K
E. 32K.
ANSWER: Option A
EXPLANATION: refer to the image below!
![](https://www.teezab.com/wp-content/uploads/2021/12/jamb-1978-28-853x1024.jpg)
Or click here to choose!
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