Standard Science Primary 6 Energy

What is the energy conversion that takes place in a solar-powered calculator when it is being used?

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

Step 1: The solar cell captures light energy from the surroundings. Step 2: This is converted into electrical energy to power the internal circuits. Step 3: The electrical energy is then used to display numbers on the screen (light energy).

Correct answer: Light energy → Electrical energy → Light energy

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