Physics WAEC

An immersion heater is rated 120W. How long does it take the heater to raise the temperature of 1.2kg of water by 15°C. (Assuming heat lost to the surrounding is negligible. Specific heat capacity of water = 4200 Jkg‾¹K‾¹C)

A. 65.0 minutes
B. 60.0 minutes
C. 52.5 minutes
D. 10.5 minutes

Correct Answer: Option D

C. 52.5 minutes

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6 years ago

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