Foundation Science Primary 6 Energy

Which of the following energy conversions takes place when a television is switched on?

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

Worked Solution

Step 1: The TV uses electricity from the power socket. Step [2-9]: The screen produces light and the speakers produce sound. Step [2-9]: The device also gets warm, indicating heat energy is produced.

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

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