Standard Science Primary 6 Energy

What is the main energy conversion when a battery-operated torch is switched on?

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

Step 1: Batteries store Chemical Potential Energy. Step 2: When the circuit is closed, it converts to Electrical Energy. Step 3: The bulb converts this to Light and some Heat Energy.

Correct answer: Chemical potential energy → Electrical energy → Light energy + Heat energy

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