Standard Science Primary 5 Systems

In the circuit shown below, Bulb B2 is fused. Which of the following will happen?

A Only Bulb B3 will light up.
B None of the bulbs will light up.
C All bulbs will continue to light up.
D Only Bulb B1 will light up.
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Worked Solution

Step 1: Identify that the bulbs are arranged in a single loop (series). Step 2: A fused bulb acts like an open switch or a break in the wire. Step 3: Since there is only one path, the entire circuit is broken. Final Answer: None light up.

Correct answer: None of the bulbs will light up.

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