Flash Education

Question

Figure shows a coil wound around a soft iron bar XY. (a) State the polarity at the end X and Y as the switch is pressed. (b) Suggest one way of increasing the strength of the electromagnet so formed.

Category: Magnetism ICSE Class 9

April 3, 2024

Answer

(a) The polarity at X — south pole and at Y — north pole.

(b) The strength of the electromagnet so formed can be increased by increasing the current in the coil.

Was this answer helpful?

Didn't liked the above answer ?

Text Generation Tool

💡 Some Related Questions

MAgnet

Show with the aid of a diagram how a wire is wound on a U-shaped piece of soft iron in order to make it an electromagnet. Complete the circuit diagram and label the poles of the electromagnet.

MAgnet

State two differences between an electromagnet and a permanent magnet.

MAgnet

You are required to make an electromagnet from a soft iron bar by using a cell, an insulated coil of copper wire and a switch. (a) Draw a circuit diagram to represent the process. (b) Label the poles of the electromagnet.

MAgnet

How is an electromagnet made? Name two factors on which the strength of the magnetic field of an electromagnet depends.

MAgnet

Name the material used for making the armature of an electric bell. Give a reason for your answer.

MAgnet

How is the working of an electric bell affected, if alternating current is used instead of direct current?

MAgnet

State two advantages of an electromagnet over a permanent magnet.

MAgnet

State two ways through which the strength of an electromagnet can be increased.

MAgnet

What is an electromagnet?

MAgnet

Why is soft iron used as the core of the electromagnet in an electric bell?

error: Content is protected !! 💀