Standard Science Primary 6 Energy

Which energy conversion takes place in a television set that is connected to a wall socket?

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

Worked Solution

Step 1: The TV is connected to a wall socket, so the input is electrical energy. Step 2: The screen produces light and the speakers produce sound. Step 3: Heat is always produced as a byproduct in electrical appliances.

Correct answer: Electrical energy -> Light energy + Sound energy + Heat energy

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