Question

How will you use a solenoid to magnetize a steel bar?

Answer 1

Step 1: Explanation about the solenoid

• A solenoid is a coil consisting of a large number of circular turns of insulated copper wires.
• The field lines inside the solenoid are parallel to each other.
• So, the strength of the magnetic field produced is the same at all points inside the solenoid.

Step 2: How can we use a solenoid to magnetize a steel bar

• Place a steel bar inside a solenoid.
• A constant current is passed through it.
• There will be constant magnetic field inside the solenoid when the constant current is flowing through the solenoid.
• In this way, the strong magnetic field inside the solenoid will magnetize the steel bar.