Standard Science Primary 6 Energy

What is the main energy conversion that takes place when a student uses a solar-powered calculator?

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

Step 1: Solar cells capture light energy from the surroundings. Step [2-9]: This is converted into electrical energy to power the device. Step [2-9]: The screen (LCD) converts electrical energy back into light for the user to see the numbers.

Correct answer: Light energy → Electrical energy → Light energy

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