Standard Science Primary 6 Energy

Which of the following shows the energy conversion that occurs when a battery-operated torch is switched on?

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

Worked Solution

Step 1: Batteries store chemical potential energy. Step 2: When the circuit is closed, it converts to electrical energy. Step 3: The bulb converts electrical energy into light and some wasted heat energy.

Correct answer: Chemical potential energy → Electrical energy → Light energy + Heat energy

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free