One kg of water, at 20° C, is heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of 20 Ω. 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), Latent heat of water 
kg]
Text Solution
Verified by ExpertsThe correct answer is:
B
JEE Main 2019
Given specific heat of the water 
Latent heat of the water 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
An unknown metal of mass 192 g heated to a temperature of 100° C was immersed into a brass calorime…
Ice at –20° C is added to 50g of water at , when the temperature of the mixture reaches , it is f…
When 100 g of a liquid A at 100° C is added to 50 g of a liquid B at temperature 75° C, the tempera…
A metal ball of mass 0.1 kg is heated upto 500° C and dropped into a vessel of heat capacity 800 a…
A thermally insulted vessel contains 150g of water at 0°C. Then the air from the vessel is pumped o…
A massless spring (K=800 N/m), attached with a mass (500 g) is completely immersed in 1 kg of water…