One kg of water, at 20°C, is heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of 20Ω. The rms voltage in the mains is 200 V. Ignoring heat loss from the kettle, time taken for water to evaporate fully, is close to:[Specific heat of water = 4200 J/(kg° C) and Latent heat of water = 2260 kJ/kg]

One kg of water, at 20°C, is heated in an electric kettle whose heati

1.	One kg of water, at 20°C, is heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of 20Ω. The rms voltage in the mains is 200 V. Ignoring heat loss from the kettle, time taken for water to evaporate fully, is close to:[Specific heat of water = 4200 J/(kg° C) and Latent heat of water = 2260 kJ/kg]
A.	16 minutes
B.	22 minutes
C.	3 minutes
D.	10 minutes
Answer» C. 3 minutes