Standard Science Primary 6 Energy

Which of the following shows the energy conversion of a television when it is in use?

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

Worked Solution

Step 1: The input energy is electricity from the wall socket. Step [2-9]: The TV produces light (picture) and sound. Step [2-9]: It also produces heat as a wasted form of energy.

Correct answer: Electrical energy → Light energy + Sound energy + Heat energy

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