Standard Science Primary 6 Energy

When a battery-operated torch is switched on, what is the main energy conversion taking place?

A Chemical Potential Energy -> Kinetic Energy -> Light Energy
B Kinetic Energy -> Electrical Energy -> Light Energy
C Electrical Energy -> Light Energy + Heat Energy
D Chemical Potential Energy -> 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 electrical energy into light and some heat.

Correct answer: Chemical Potential Energy -> Electrical Energy -> Light Energy + Heat Energy

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