Standard Science Primary 5 Systems

Ravi added a second battery in series to his circuit. What will happen to the brightness of the bulb?

A It will become dimmer.
B It will become brighter.
C The brightness will not change.
D The bulb will immediately fuse.
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Worked Solution

Step 1: Adding batteries in series increases the total voltage. Step 2: More electrical energy flows through the bulb. Step 3: The bulb glows brighter.

Correct answer: It will become brighter.

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