Physicshard · Past Paper
What is the total energy consumed in Joules by a 100W bulb in 24 hours?
A2400 J
B86,400 J
C8,640,000 J
D240,000 J
✓ Correct Answer: C — 8,640,000 J
Energy = Power * Time = 100W * (24 * 3600)s = 100 * 86400 = 8,640,000 J.
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