Standard Science Primary 6 Energy

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

A Chemical potential energy → Light energy + Heat energy
B Electrical energy → Light energy + Sound 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: Battery stores chemical potential energy. Step 2: This is converted to electrical energy in the circuit. 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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