Categories: Physics WAEC

Calculate the time taken to heat 2kg of water from 50°C to 100°C in an electric kettle taking 5A, from a 210V supply. (Specific heat capacity of water = 4200kg−¹K−¹
Calculate the time taken to heat 2kg of water from 50°C to 100°C in an electric kettle taking 5A, from a 210V supply. (Specific heat capacity of water = 4200kg−¹K−¹Calculate the time taken to heat 2kg of water from 50°C to 100°C in an electric kettle taking 5A, from a 210V supply. (Specific heat capacity of water = 4200kg−¹K−¹

A. 2.5 minutes
B. 5.7 minutes
C. 6.7 minutes
D. 7.5 minutes
E. 9.5 minutes

Correct Answer:

Option C – 6.7 minutes

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