Telephone earpiece works on the principle of _________ effect.
Telephone earpiece works on the principle of _________ effect.
The correct option is A Magnetic
The Telephone Earpiece also known as the receiver serves as an electric mouth. Like a human voice, it has vocal cords.
The vocal cords of the receiver are a diaphragm. Two magnets located at the
edge of the diaphragm cause it to vibrate. One of the magnets is a permanent
magnet that constantly holds the diaphragm close to it. The other magnet is an
electromagnet. It consists of a piece of iron with a coil of wire wound around
it. When an electric current passes through the coil, the iron core becomes
magnetized. The diaphragm is pulled toward the iron core and away from the
permanent magnet. The pull of the electromagnet varies between strong and weak,
depending on the variations in the current. Thus, the electromagnet controls
the vibrations of the diaphragm in the receiver.
The Telephone Earpiece also known as the receiver serves as an electric mouth. Like a human voice, it has vocal cords. The vocal cords of the receiver are a diaphragm. Two magnets located at the edge of the diaphragm cause it to vibrate. One of the magnets is a permanent magnet that constantly holds the diaphragm close to it. The other magnet is an electromagnet. It consists of a piece of iron with a coil of wire wound around it. When an electric current passes through the coil, the iron core becomes magnetized. The diaphragm is pulled toward the iron core and away from the permanent magnet. The pull of the electromagnet varies between strong and weak, depending on the variations in the current. Thus, the electromagnet controls the vibrations of the diaphragm in the receiver.
