Standard Science Primary 6 Energy

When an electric fan is switched on, what are the primary energy conversions taking place?

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

Step 1: The fan uses electricity (Electrical Energy). Step 2: The blades turn (Kinetic Energy). Step 3: The motor gets warm and makes noise (Heat and Sound Energy). Final Answer: Electrical energy → Kinetic energy + Sound energy + Heat energy

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

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