Standard Science Primary 5 Systems

Jun Jie sets up the circuit shown below to test different materials. The bulb will light up if Object X is made of __________.

A wood
B glass
C copper
D plastic
Show Worked Solution

Worked Solution

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

Correct answer: copper

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

Start Free Trial — 7 Days Free