Question

Write down the principle, construction and working of an electric bell​

Answer 1

The construction of an electric bell consists of a gong, an electromagnet, a soft iron rod and a contact screw.

The working of an electric bell: When the current passes through the electromagnet, it becomes magnetized which helps to attract the armature and after this the hammer raids and attract the armeture.

Answer 2

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The construction of an electric bell:

The construction of an electric bell

consists of a gong, an

electromagnet, a soft iron rod and a

contact screw.

The working of an electric bell:

When the current passes through the

electromagnet, it

becomes magnetized which helps to

attract the armature and after this the

hammer raids and attract the armature.

At that time, electromagnet didn't

behave

as a magnet because of the breaking

contact with the screw. So, again

armeture comes

down to make the contact with the

screw. This cycle keeps on repeating.

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