Advanced Science Primary 5 Systems

How does adding more batteries in series affect the brightness of a bulb in a circuit?

A The bulb will immediately fuse.
B The brightness remains the same.
C The bulb becomes brighter.
D The bulb becomes dimmer.
Show Worked Solution

Worked Solution

Step 1: Batteries in series increase the total voltage of the circuit. Step 2: Higher voltage pushes more current through the bulb. Step 3: More current results in a brighter light.

Correct answer: The bulb becomes brighter.

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