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

Step 1: Batteries store energy in chemical form. Step 2: When the circuit is closed, chemical energy is converted to electrical energy. Step 3: The bulb converts electrical energy into useful light and wasted heat.

Correct answer: Chemical potential energy → Electrical energy → Light energy + Heat energy

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