Physicshard · Past Paper
An electric kettle rated 1.5kW, 220V is used for 4 minutes to boil water. How much energy is consumed in Joules?
A6000 J
B360,000 J
C90,000 J
D1,500 J
✓ Correct Answer: B — 360,000 J
Energy = Power * Time. 1.5kW = 1500W. 4 mins = 240s. Energy = 1500 * 240 = 360,000 J.
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