Standard Science Primary 6 Energy

Sara tested four objects in a circuit. Which object will cause the bulb to light up?

A A plastic ruler
B A dry piece of wood
C An iron nail
D A glass rod
Show Worked Solution

Worked Solution

Step 1: To light the bulb, the object must be an electrical conductor. Step 2: Most metals are conductors; most non-metals are insulators. Step 3: Iron is a metal and therefore conducts electricity.

Correct answer: An iron nail

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

Start Free Trial — 7 Days Free