One kg of water at 20 ^\circC, is heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of 20 \Omega . 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: [12 Apr 2019 Shift 2]

Thermodynamics Part 2

Section: Physics

Question : 70 of 100

Marks: +1, -0

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:

[12 Apr 2019 Shift 2]

22 minutes
16 minutes
3 minutes
10 minutes

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