Standard Science Primary 5 Systems

What happens to the brightness of a bulb when an additional battery is added in series to a closed circuit?

A The brightness remains the same.
B The bulb flashes and goes out immediately.
C The bulb becomes brighter.
D The bulb becomes dimmer.
Show Worked Solution

Worked Solution

Step 1: Adding a battery in series increases the total voltage in the circuit. Step 2: This increases the current flowing through the bulb. Step 3: More current results in a brighter bulb.

Correct answer: The bulb becomes brighter.

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