Standard Science Primary 5 Systems

Stan has a circuit with one bulb and one battery. He wants to make the bulb shine brighter. What should he do?

A Add a switch to the circuit.
B Add another bulb in series.
C Add another battery in series.
D Use longer wires.
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Worked Solution

Step 1: The brightness of a bulb depends on the amount of electrical energy flowing through it. Step 2: Adding a battery in series increases the electrical energy supplied to the circuit. Step 3: This causes more current to flow, making the bulb brighter.

Correct answer: Add another battery in series.

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