"Exploration - Conditions for Producing Induced Current" Magnetic Phenomena PPT Courseware 2

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"Exploration - Conditions for Producing Induced Current" Magnetic Phenomena PPT Courseware 2

faraday

Faraday Michael Faraday (1917-1867) was born on September 22, 1791 in a family of manual workers. The family had no special education and was quite poor. Faraday's father was a blacksmith. Faraday's school education was very poor when he was a child. At the age of thirteen, he became an apprentice in a shop that bound and sold books and ran a stationery business.

Faraday's period of greatest achievement was from 1830 to 1839, when he was a leading scientist who contributed to the discovery of modern electricity. In 1821, he studied the magnetic effect of electric current discovered by Oersted and made an important discovery: the direction of magnetic effect is perpendicular to the direction of the current that produces magnetic effect. Faraday also built an electric motor and demonstrated the rotation of a wire within a constant magnetic field. He even demonstrated this rotation within the geomagnetic field. This experiment made a deep impression on both himself and his contemporaries.

Exchange and discussion

1. If the angle between the movement direction of the conductor and the magnetic field lines is an acute angle, can current also be generated in the conductor?

Yes, but when the included angle is zero, no induced current can be generated

2. If the conductor does not move and the U-shaped magnet is moved, will current be generated in the conductor?

Yes, because moving the U-shaped magnet, according to the relative motion, using the U-shaped magnet as a reference object, is equivalent to the movement of the conductor cutting the magnetic field lines.

3. The size of the current generated by a conductor in a magnetic field is at least related to which factors?

It is related to factors such as the strength of the magnetic field, the speed of the conductor's movement, the resistance of the conductor, the number of turns of the coil, etc.

4. How is energy transformed during the electromagnetic induction phenomenon?

Conclusion Induced current

1. Discovery time: 1831 by British physicist Faraday

2. Content: When a part of the conductor loop moves to cut the magnetic field lines in the magnetic field, a current will be generated in the loop. This phenomenon is called electromagnetic induction. The current generated in the electromagnetic induction phenomenon is called induced current.

3. Direction: In the phenomenon of electromagnetic induction, the direction of the induced current is related to the direction in which the conductor cuts the magnetic field lines and the direction of the magnetic field lines.

4. Conditions for generating induced current: the circuit must be closed

Part of the conductor moves to cut the magnetic field lines

5. Energy conversion: mechanical energy - electrical energy

summary:

1. What is the phenomenon of electromagnetic induction?

2. What is induced current?

3. What are the conditions for the generation of induced current?

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"Exploration - Conditions for Producing Induced Current" Magnetic Phenomena PPT Courseware:

"Exploring the Conditions for Producing Induced Current" Magnetic Phenomenon PPT Courseware 1. Electromagnetic Induction Phenomenon Question: Current can produce a magnetic field, such as Oersted's experiment, but can a magnetic field produce a current? Make a Plan Try 1: Keep both the wireframe and the magnet still; try...

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Update Time: 2024-07-11

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