Physicshard · Past Paper
An electric bulb of 60 W is used for 10 hours daily. How many 'units' of energy are consumed in 30 days?
A18 units
B1.8 units
C180 units
D0.18 units
✓ Correct Answer: A — 18 units
Total energy = (60W * 10h * 30 days) / 1000 = 18 kWh. 1 kWh is 1 unit.
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