Physics
Name the material used for making the armature of an electric bell. Give a reason for your answer.
Related Questions
State two advantages of an electromagnet over a permanent magnet.
How is the working of an electric bell affected, if alternating current is used instead of direct current?
How is an electromagnet made? Name two factors on which the strength of the magnetic field of an electromagnet depends.
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.