Foundation Science Primary 6 Energy

Where should a switch be placed in a series circuit to turn off all three bulbs at once?

A Before the first bulb
B Anywhere in the circuit
C Between the second and third bulb
D After the third bulb
Show Worked Solution

Worked Solution

Step 1: In a series circuit, there is only one path for current. Step 2: Opening a switch anywhere in that single loop creates a gap. Step 3: Therefore, the position does not matter for turning off all components.

Correct answer: Anywhere in the circuit

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