Standard Science Primary 5 Systems

Study the circuit below. If one more bulb is added in parallel to the existing ones, what happens to the brightness of Bulb B1?

A It remains the same.
B It becomes dimmer.
C It goes out.
D It becomes brighter.
Show Worked Solution

Worked Solution

Step 1: Bulbs in a parallel circuit are connected across the same potential difference (voltage). Step 2: Each branch operates independently. Step 3: Adding another branch does not change the voltage across B1. Step 4: Brightness remains the same.

Correct answer: It remains the same.

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