Physicsmedium · Past Paper
A 100 Watt bulb is used for 10 hours daily. How many 'units' of electricity does it consume in one day?
A100 units
B10 units
C1 unit
D0.1 unit
✓ Correct Answer: C — 1 unit
Energy = Power * Time = 100W * 10h = 1000 Wh = 1 kWh = 1 unit.
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