# Electric cooker

During which time t does an electric cooker with power input P = 500 W and with efficiency n = 75% heat water with mass m = 2 kg and temperature t1 = 10°C to the boiling point (t2 = 100°C).

The specific heat capacity of water is c = 4 180 J. Kg-1. K-1

The specific heat capacity of water is c = 4 180 J. Kg-1. K-1

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