Advanced Science Primary 6 Energy

Ross wants to control two bulbs independently in his room. How should he arrange the switches?

A One switch in parallel with both bulbs.
B One switch in series with both bulbs.
C Two switches in series with the battery.
D A separate switch in each branch of a parallel circuit.
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Worked Solution

Step 1: Independent control means one bulb can be on while the other is off. Step 2: This requires a parallel circuit. Step 3: Placing a switch in each individual branch allows you to open/close that specific path.

Correct answer: A separate switch in each branch of a parallel circuit.

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