Question

Explain with the help of a diagram, how does the magnetic effect of electric current help in the working of an electric bell.

Answer 1

Answer:

When the bell is pressed, the contact screw touches the iron strip and the circuit is completed.

The current starts flowing through the coil.

The electromagnet becomes magnetised and the soft iron armature is attracted towards the electromagnet. The movement of the iron causes the hammer to hit the gong.

This movement breaks the circuit at point P, so that the current stops flowing and switches off the electromagnet.

The spring pulls the armature back to its original position, the circuit is remade and the process starts over again. This is how the bell rings.

Explanation:

Answer 2

Answer:

electric bell spring helps