Standard Science Primary 5 Systems

Ravi set up a series circuit with two bulbs. He noticed the bulbs were very dim. What can he do to make the bulbs brighter?

A Replace the wires with longer ones.
B Add another bulb in series.
C Remove one battery from the circuit.
D Add another battery in series.
Show Worked Solution

Worked Solution

Step 1: Brightness depends on the amount of current. Step [2-9]: In a series circuit, adding batteries increases the voltage. Step [2-9]: Higher voltage pushes more current through the bulbs, making them brighter.

Correct answer: Add another battery in series.

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