Standard Science Primary 5 Systems

Siti has a circuit with one battery and one bulb. She adds a second identical bulb in parallel to the first one. What will happen to the brightness of the first bulb?

A It will become dimmer.
B It will become brighter.
C It will remain the same.
D It will not light up.
Show Worked Solution

Worked Solution

Step 1: When components are connected in parallel, each branch receives the full voltage of the battery. Step 2: Adding a new parallel branch for the second bulb does not change the voltage across the first bulb. Step 3: Therefore, the brightness of the first bulb remains the same.

Correct answer: It will remain the same.

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