Standard Science Primary 6 Energy

Which of the following shows the correct energy conversion when a battery-operated torch is switched on?

A Electrical Energy → Chemical Potential Energy → Light Energy
B Chemical Potential Energy → Kinetic Energy → Heat Energy
C Kinetic Energy → Electrical Energy → Light 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 heat.

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

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