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22. An electric kettle is required to heat 0.6 litre of water
from 10°C to boiling point in...
Physics, 02.07.2021 15:30 aliyahaliyah54
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22. An electric kettle is required to heat 0.6 litre of water
from 10°C to boiling point in 5 min, the supply
voltage being 240 V. The efficiency of the kettle is 78
per cent. Calculate: (a) the resistance of the heating
element; (b) the cost of the energy consumed at
8.0p/kWh. Assume the specific heat capacity of water
Answers: 3
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