Standard Science Primary 5 Systems

Ravi placed Object X in the gap of the circuit shown below. The bulb lit up. What material could Object X be made of?

A Rubber
B Glass
C Steel
D Wood
Show Worked Solution

Worked Solution

Step 1: For the bulb to light up, the circuit must be closed. Step 2: Object X must allow electric current to pass through it, meaning it is an electrical conductor. Step 3: Metals are good electrical conductors. Steel is a metal.

Correct answer: Steel

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free