Foundation Science Primary 5 Systems

If Luke adds more batteries in series to a circuit with one bulb, what will happen to the brightness of the bulb?

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

Worked Solution

Step 1: Adding batteries in series increases the electrical energy supplied to the circuit. Step 2: More current flows through the bulb. Step 3: The bulb glows with greater intensity.

Correct answer: The bulb becomes brighter.

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