Standard Science Primary 6 Energy

What is the main energy conversion that occurs in a television when it is switched on?

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

Worked Solution

Step 1: Identify the source of energy (Mains electricity). Step 2: Identify the outputs (Images/Light, Sound, and the device getting warm/Heat). Step 3: Map the flow: Electrical to Light, Sound, and Heat.

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

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