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what is electric calling bell
An electric bell is a mechanical or electronic bell that functions
by means of an electromagnet when an electric current is applied
it produces a repetitive buzzing clanging or ringing sound.
what is electrical calling bell and how it works?
An electric bell contains an electromagnet consisting of coils of insulated
wire wound round iron rods. When an electric current flows through the coils
the rods become magnetic and attract a piece of iron attached to a clapper
the clapper hits the bell and makes it ring

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