Standard Science Primary 6 Energy

Which of the following shows the energy conversion that takes place when an electric fan is switched on?

A Kinetic energy -> Electrical energy + Heat energy
B Electrical energy -> Chemical potential energy
C Chemical potential energy -> Kinetic energy
D Electrical energy -> Kinetic energy + Sound energy
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Worked Solution

Step 1: The fan uses electrical energy from the power supply. Step 2: The electrical energy is converted into kinetic energy as the blades turn. Step 3: Some energy is also converted into sound and heat (though sound is given here).

Correct answer: Electrical energy -> Kinetic energy + Sound energy

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