Electrical Engineering - Energy and Power - Discussion

Discussion Forum : Energy and Power - General Questions (Q.No. 7)
7.
A 15 V source is connected across a 12 resistor. How much energy is used in three minutes?
938 Wh
0.938 Wh
56.25 Wh
5.6 Wh
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
31 comments Page 4 of 4.

ARAMUTHAN said:   1 decade ago
Energy = Power x time (V=IR)--I = 15 V/12Ohms = 19.5

Energy = (1.25*15) x 3

Energy = 56.25 Wh so the answer should be C


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