An electric heater rated 220v, 1000 w is immersed into a bucket full of water, calculate the mass of water if the temperature changes from 30°c to 100°c and the current flows for 300seconds. [specific heat capacity of water = 4200 jkg-1 K-1]

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An electric heater rated 220v, 1000 w is immersed into a bucket full of water, ...

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An electric heater rated 220v, 1000 w is immersed into a bucket full of water, calculate the mass of water if the temperature changes from 30°c to 100°c and the current flows for 300seconds.
[specific heat capacity of water = 4200 jkg^-1 K^-1]

A. 4.28 kg
B. 42.86 kg
C. 1.02 kg
D. 7.14 kg

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