If a 5KW immersion heater is used to heat water for a bath. It takes 40 minutes to heat up the water then 3.33 KWh of electrical energy has been converted into thermal energy.
It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
As given, It takes 40 minutes to heat up the water
60 minutes = 1 hr
1 minute = 1/60
40 minutes = 40/60 hr
energy = power × time
= 5 ×2/3
=3.33 KWh
Thus, if the bath water is heated with a 5KW immersion heater then 3.33 KWh of electrical energy is converted into thermal energy after 40 minutes of heating the water.
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