Standard Science Primary 6 Energy

Which of the following correctly shows the energy conversion in a battery-operated flashlight when it is switched on?

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

Step 1: The source is the battery (Chemical Potential Energy). Step 2: The battery provides current (Electrical Energy). Step 3: The bulb glows (Light Energy) and becomes warm (Heat Energy).

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

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