Energy Engineering Question: Download Energy Engineering PDF

How many watt-hours represent 65 W used for 18 h?

A. 11.7 Wh
B. 1,170 Wh
C. 11,700 Wh
D. 117,000 Wh

Option B

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If it takes 400 ms to use 12,000 J of energy, the power is A. 30 kW B. 30 W C. 3 W D. 300 kW	For 12 V and 40 mA, the power is A. 480 mW B. 0.480 W C. 480,000 µW D. all of the above