Standard Science Primary 5 Systems

What is the main function of a switch in an electrical circuit?

A To open or close the circuit.
B To provide electrical energy to the circuit.
C To increase the brightness of the bulbs.
D To change electrical energy into light energy.
Show Worked Solution

Worked Solution

Step 1: Recall the function of basic circuit components. Step 2: A switch acts as a bridge. Step 3: When closed, it completes the circuit allowing current to flow. When open, it breaks the circuit, stopping the flow.

Correct answer: To open or close the circuit.

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

Start Free Trial — 7 Days Free