Magnetic Effect Of Electric Current
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Friends, I hope you all are well, today is Saturday and you all have a good day, and todays topic is Magnetic Effect Of Electric Current starts the topic with The left-hand rule of Fleming
The left-hand rule of Fleming
As per this rule, spread your left hand's index, middle, and thumb so that they are all perpendicular to one another. The thumb will point in the direction of the conductor's motion or the direction of the force acting on it if the forefinger points in the direction of the magnetic field and the middle finger points in the direction of the current flowing through the conductor. The Fleming left hand rule is the name of this rule.
MRI stands for Magnetic Resonance Imaging in its entirety.
imaging using resonance). This unique method uses the magnetic field within the body as the foundation to produce images of various body parts. Analysis of these images is used to diagnose diseases.
Magnetic fields are produced in two areas of the human body:
(i) Human brain
(ii) human heart
The Electric Motor
A rotating machine known as an electric motor transforms electrical energy into mechanical energy. Electric fans, refrigerators, mixers, washing machines, computers, MP3 players, and other appliances all use this component.
A basic electric motor principle
The magnetic effect of electric current serves as the foundation for electric motor operation. The coil is rotated in accordance with Fleming's left-hand rule. This is how an electric motor operates.
The dividing ring's function in an electric motor is:
An electric motor's dividing ring serves as a speed converter. A power converter is an apparatus that changes the direction of an electrical circuit's current flow.
Commutator:
The tool used to reverse a circuit's current flow is known as a changer.
Industrial motors Powerful motors include commercial motors. Its attributes:
The following qualities make it powerful.
(i) Permanent magnets are replaced with electromagnets,
(ii) A coil that carries current has a lot of turns.
(iii) A soft iron-core is wrapped around the coil. Armature refers to the soft iron-core around which the coil is wound as well as the coil itself. As a result, the motor's power is increased.
Electro Magnetic Induction
Electromagnetic induction is the process by which a conductor's shifting magnetic field induces an electric current in a different conductor.
Electromagnetic induction was discovered by Michael Faraday.
Faraday's understanding of "how an electric current can be generated using a moving magnet." The galvanometer needle deflects as an electric current flows through the coil's circuit as a result of moving the magnet toward it. The induced current flows in the circuit as a result of the induced potential difference created by the motion of the magnet with respect to the coil.
Galvanometer: Galvanometer: A galvanometer is a device that checks to see if there is electricity flowing through a circuit.
Inducing an electric current in a coil can be done in one of two ways:
(i) through the coil's movement in a magnetic field
(ii) By altering the coil's magnetic field.
Moving the coil in a magnetic field makes it easier to produce induced electric current.
Fleming right-hand rule
As per this rule, spread your right hand's index, middle, and thumb so that they are all perpendicular to one another. The thumb will point in the direction of the conductor's motion or the direction of the force acting on it if the forefinger points in the direction of the magnetic field and the middle finger points in the direction of the current flowing through the conductor. The Fleming right-hand rule is what it is known as..
An Electric Generator
Electric generator working principle: An electric generator produces an electric current by rotating a conductor within a magnetic field using mechanical energy.
A rotating rectangular coil ABCD sandwiched between a permanent magnet's two poles makes up an electric generator. Two rings, R1 and R2, connect this coil's two ends. On the rings R1 and R2, respectively, two fixed conducting brushes B1 and B2 are kept pressed. From the inside, the rings R1 and R2 are both pivots. To give the coil inside the magnetic field rotational motion, its axis can be mechanically rotated from the outside. The coil cuts the magnetic field lines as the permanent magnet's magnetic field moves. By using Fleming's right-hand rule and rotating the coil ABCD clockwise, an induced current begins to flow in these arms along the directions AB and CD.
Alternating Current: This term refers to an electric current that reverses direction after equal time intervals (A.C). Alternating current generator is the name of this device for producing electricity (ac generator).
Direct Current: The term "direct current" refers to an electric current that only flows in one direction (D.C).
A distinction between direct current and alternating current:
A.C.: Alternating Current
I It continuously changes course at predetermined intervals of time.
An electric generator produces it.
Direct current (d.c):
I It consistently moves in the same manner.
It is produced by the battery or cell. The cell or battery generates direct current (d.c.). Electric generator with alternating current
Benefits of Alternating Current: One benefit of alternating current is that it can transmit electrical power over long distances with little energy loss.
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