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WAEC Physics 2013 Paper

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Question : 19

Total: 46

An electric heater has a resistance of 50Ω. When it is immersed in water and connected to mains source, it draws a current of 4.0A. Calculate the heat gained by the water if the heater is switched on for 2 minutes, assuming no heat losses to the surroundings

4200J
1600J
24000J
96000J

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