Standard Science Primary 6 Energy

Which of the following shows the energy conversion when an electric iron is used?

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

Worked Solution

Step 1: An electric iron takes in electrical energy from the mains. Step [2-9]: The heating element converts it to heat energy (useful) and the indicator lamp produces light (non-useful).

Correct answer: Electrical energy → Heat energy + Light energy

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