Standard Science Primary 6 Energy

What is the main energy conversion that takes place when a television is switched on?

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

Step 1: The input energy for a television is electricity. Step 2: The output energy we see is light and what we hear is sound. Step 3: TVs also get warm after use, indicating heat energy is produced.

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

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