JEE MainPhysicsHeat and ThermodynamicsMCQ+4 / −1
One kg of water, at 20oC, heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of 20 . 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 oC), Latent heat of water = 2260 kJ/kg]
- A10 minutes
- B22 minutes
- C3 minutes
- D16 minutes
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