Mathematics · Current Electricity
An electric kettle takes 4 A current at 220 V. If the entire electrical energy is converted into heat energy, then the time (in minutes) taken to increase the temperature of 1 kg of water from 34°C to 100°C is (Take specific heat capacity of water = 4200 J kg-1 K-1):
- 16.25
- 25.25✓
- 34.50
- 47.50
Correct answer
5.25
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