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Calculate the time in which 4.8 kJ of energy would be expended when an electric heater ...

Calculate the time in which 4.8 kJ of energy would be expended when an electric heater of resistance 1.8 x 103Ω is used on a 240 V mains supply. (Neglect heat losses to the surrounding).

A. 150.0s
B. 90.0s
C. 36.0s
D. 20.0s
E. 2.7s.




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