Standard Science Primary 6 Energy

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

A Chemical Potential Energy → Electrical Energy → Light Energy + Heat Energy
B Electrical Energy → Kinetic Energy → Sound Energy
C Light Energy → Chemical Potential Energy → Heat Energy
D Kinetic Energy → Electrical Energy → Light Energy
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Worked Solution

Step 1: The battery contains chemicals (Chemical Potential Energy). Step 2: When the circuit is closed, current flows (Electrical Energy). Step 3: The bulb filament glows (Light Energy) and becomes hot (Heat Energy).

Correct answer: Chemical Potential Energy → Electrical Energy → Light Energy + Heat Energy

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