Question 1: The working principle of dynamic microphone is realized by using the electromagnetic response phenomenon.
When sound waves vibrate the metal diaphragm, the coil (called the voice coil) connected to the diaphragm vibrates together, and the voice coil vibrates in the magnetic field of the magnet permanent. An induced current (electrical signal) is generated. The magnitude and direction of the induced current change is determined by the sound waves. This signal current is amplified by the amplifier and then transmitted to the speaker. an amplified sound is output from the speaker.
Question 2: Are the principles of moving coil microphones and headphones the same? The microphone changes and the current generates a magnetic field. The earphone changes the magnetic field and generates an electric current. Because sound vibrates the diaphragm, the magnetic material of the earphone is uneven. The changess in the magnetic field generate current.
Question 3: The principle of the moving coil. microphone Moving coil microphone (moving coil microphone) Technical acoustics moving coil microphone, moving coil microphone) is a device that converts sound into electrical signals. Dynamic microphones are manufactured using the phenomenon of electromagnetic induction. When sound waves vibrate a metal diaphragm, a coil (called a voice coil) connected to the diaphragm vibrates together, and the voice coil vibrates in the magnetic field of a permanent magnet. An induced current (electrical signal) is generated. The magnitude and direction of the induced current change is determined by the sound wave. This signal current is amplified by the amplifier and then transmitted to the speaker. amplified sound is output from the speaker.
Question 4: The working principle of the dynamic microphone in the image isthe same (Analysis C: Since the working principle of dynamic microphone is electromagnetic induction, only the power generation in C The principle of the machine is the same, so choose C
Question 5: What are the principles of dynamic microphones and speakers of generators and motors
Question 6: The working principle of dynamic microphones is? same as that of electrical devices The structure of dynamic microphones is the same as that of dynamic headphones The working principle is reverse that the sound waves push the diaphragm! The latter is the coil generating an alternating magnetic field through the audio current It interacts with the permanent magnet to make the vibrating membrane emit sound waves! after passing through the amplifiercator, its main purpose is therefore to change the intensity of the sound;
(2) The sound vibrates the diaphragm, causing the coil to cut the magnetic lines in the magnetic field. The movement produces an induced current. This is the phenomenon of electromagnetic induction
(3) When the coil is powered, it is subjected to the action of a force in the magnetic field. magnetic field, and the direction of the force is related to the direction of the current. When the direction of current changes, the direction of the coil force becomes opposite and the coil moves to the right, similar to the principle of the loudspeaker. the motor is also manufactured based on the principle that the energized coil is forced to rotate in the magnetic field., and the principle of the generator is electromagnetic induction.
So the answer is: (1) volume; (2) electromagnetic induction; (3) it is true;