Standard Science Primary 6 Energy

Study the circuit below. When the switch is closed, what is the main energy conversion taking place in the bulb?

A Electrical energy → Light energy + Heat energy
B Kinetic energy → Electrical energy → Light energy
C Electrical energy → Kinetic energy → Light energy
D Chemical potential energy → Electrical energy → Light energy + Heat energy
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Worked Solution

Step 1: Identify the source (Battery = Chemical Potential Energy). Step 2: The battery converts this to Electrical Energy in the wires. 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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