Standard Science Primary 6 Energy

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

A Light Energy -> Electrical Energy -> Chemical Potential Energy
B Electrical Energy -> Chemical Potential Energy -> Light Energy
C Chemical Potential Energy -> Electrical Energy -> Light Energy + Heat Energy
D Kinetic Energy -> Electrical Energy -> Light Energy
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Worked Solution

Step 1: Batteries store chemical potential energy. Step 2: When switched on, this converts to electrical energy in the circuit. 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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