Standard Science Primary 6 Energy

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

A Electrical energy → Potential energy + Light energy
B Electrical energy → Kinetic energy + Heat energy + Sound energy
C Kinetic energy → Electrical energy → Sound energy
D Chemical potential energy → Electrical energy → Kinetic energy
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Worked Solution

Step 1: The fan uses electricity from the power socket (Electrical energy). Step 2: The blades turn, creating motion (Kinetic energy). Step 3: Friction and motor operation also produce heat and noise (Heat and Sound energy).

Correct answer: Electrical energy → Kinetic energy + Heat energy + Sound energy

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