On which of the following principles does an electric bell work?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Magnetic effect of electric current

Heating effect of electric current

Law of conservation of momentum

None of these

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

An electric bell works on the principle of magnetic effect of electric current.
An electric bell consists of an electromagnet which, when current is passed through it, becomes a magnet, and the bell starts ringing. The following diagram shows the structure of an electric bell.
When the electromagnet gets magnetized, it attracts the armature towards itself and the clapper attached to the armature swings towards the gong and hits it. When the armature gets attached to the electromagnet, the circuit breaks and the electromagnet gets demagnetized. This process repeats itself, and we hear the ringing of the bell.

Watch 3-min video & get full concept clarity