Standard Science Primary 6 Energy

Siti set up a circuit with three identical bulbs. When she unscrewed one bulb, the other two remained lit. Which circuit arrangement did she use?

A The battery was not strong enough.
B All bulbs were in parallel.
C One bulb in series with two in parallel.
D All bulbs were in series.
Show Worked Solution

Worked Solution

Step 1: Identify the observation (one removed, others stay lit). Step 2: Recall that in a parallel arrangement, there are multiple paths for current. Step 3: Removing one bulb in parallel does not break the path for the others.

Correct answer: All bulbs were in parallel.

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