plzz tell paragraph about electric bell
Answers
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. Electric bells have been widely used at railroad crossings, in telephones, fire and burglar alarms, as school bells, doorbells, and alarms in industrial plants, since the late 1800s, but they are now being widely replaced with electronic sounders. An electric bell consists of one or more electromagnets, made of a coil of insulated wire around an iron bar, which attract an iron strip armature with a clapper. When an electric current flows through the coils, the electromagnet creates a magnetic field which pulls the armature towards it, causing the hammer to strike the bell.
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Answer ☆
The switch is pressed and current flows through the circuit. The electromagnet is powered and generates a magnetic field that attracts the iron strip towards it. When the striking arm strikes the gong, the contact is broken and current stops flowing through the circuit.
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