Iron powder is spread near the wires of a circuit consisting of a set of batteries, a torch bulb and connected through wires. When the circuit is closed, the iron powder sticks to the wires. This is because:

Batteries are made up of magnets

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Bulb is made up of magnets.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Wires behave as magnets when current flows through them.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Circuit is connected to magnets.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Wires behave as magnets when current flows through them.
A current-carrying conductor behaves as a magnet.
When the circuit is closed, current starts flowing through the wires and wires behave as the magnets.
Therefore, the iron powder is attracted to the wires when the circuit is closed.

Suggest Corrections

Similar questions

Let the internal circuit of a torch contain a cell, key and a bulb connected with wires. What happens when the torch is switched on?

Q. When a circuit containing a bulb and a battery connected by wires is broken, the bulb stops glowing.

When a circuit containing a bulb and a battery connected by wires is broken, by cutting one wire, the bulb stops glowing.

Q. Ayanna has set up an electric circuit using some connecting copper wires, a battery, a switch and a bulb that she has taken from a torch light. But after connecting the equipment, the bulb is not glowing. What can be the reasons for this?

A set up consisting of a bulb, salt solution and a magnetic compass is arranged in such a manner that bulb and salt solution come in between the electric wires connected to the cell and hence complete the circuit. The magnetic compass is wrapped with the connecting wires. When switched on, current flows through the salt solution, the bulb glows and the needle deflects. Which of the following effects of current is responsible for this?

Join BYJU'S Learning Program