
An electric bell has an electromagnet
A. True
B. False
Answer
430.8k+ views
Hint: In order to answer the question we will first have an idea of the electric bell. The electric bell is a basic circuit that makes a sound when the circuit is completed and the button is pressed. It is because of this simplicity that doorbells are such a marvel. The bell's simple devices put the scientific principle of electromagnetic to practical use.
Complete Step By Step Answer:
Process of an electric bell's operation-
Current travels through the circuit after the switch is pressed. When the electromagnet is turned on, it produces a magnetic field that pulls the iron strip towards it. The gong is struck by the striker (bell). The contact is broken and current stops flowing across the circuit when the striking arm strikes the gong. The electromagnet's magnetic field is lost as a result of this. The striker is returned to its original rest position by the linked spring arm. The circuit now has current flowing through it because the contact has been repaired (provided the main switch is still pressed). The procedure is repeated from beginning to end.
An electric bell is a mechanical or electronic bell that uses an electromagnet to function. When an electric current is applied, a buzzing, clanging, or ringing sound is produced.
Hence the above given statement is true that an electric bell has an electromagnet.
So, the correct option is: A. True.
Note:
Since the late 1800s, electromechanical bells have been widely employed at railroad crossings, in telephones, as school bells, doorbells, and alarms in industrial sites, but they are currently being mostly supplanted by electronic sounders. One or more electromagnets, formed of a coil of insulated wire wrapped around an iron bar, attract an iron strip armature with a clapper in an electric bell.
Complete Step By Step Answer:
Process of an electric bell's operation-
Current travels through the circuit after the switch is pressed. When the electromagnet is turned on, it produces a magnetic field that pulls the iron strip towards it. The gong is struck by the striker (bell). The contact is broken and current stops flowing across the circuit when the striking arm strikes the gong. The electromagnet's magnetic field is lost as a result of this. The striker is returned to its original rest position by the linked spring arm. The circuit now has current flowing through it because the contact has been repaired (provided the main switch is still pressed). The procedure is repeated from beginning to end.
An electric bell is a mechanical or electronic bell that uses an electromagnet to function. When an electric current is applied, a buzzing, clanging, or ringing sound is produced.
Hence the above given statement is true that an electric bell has an electromagnet.
So, the correct option is: A. True.
Note:
Since the late 1800s, electromechanical bells have been widely employed at railroad crossings, in telephones, as school bells, doorbells, and alarms in industrial sites, but they are currently being mostly supplanted by electronic sounders. One or more electromagnets, formed of a coil of insulated wire wrapped around an iron bar, attract an iron strip armature with a clapper in an electric bell.
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