Foundation Science Primary 5 Systems

Which of the following conditions is required for a bulb to light up in an electrical circuit?

A The circuit must have at least two batteries.
B The circuit must be closed with no gaps.
C The circuit must have a switch.
D The circuit must use only copper wires.
Show Worked Solution

Worked Solution

Step 1: Electric current needs a continuous path to flow. Step 2: A closed circuit provides this continuous path without any gaps. Step 3: Therefore, the circuit must be closed.

Correct answer: The circuit must be closed with no gaps.

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