Standard Science Primary 6 Energy

What is the main energy conversion that occurs in a circuit consisting of a battery and a buzzer?

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

Step 1: A battery stores chemical potential energy. Step 2: This is converted to electrical energy when the circuit is closed. Step 3: The buzzer converts electrical energy into sound energy.

Correct answer: Chemical potential energy → Electrical energy → Sound energy

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