Magnetic Effect Of Electric Current Direct Current Dc

Edited By Team Careers360 | Updated on Nov 11, 2024 07:19 PM IST

Magnetic Effect Of Electric Current Direct Current Dc - A magnetic field is a force field formed by magnetic dipoles and moving electric charges that exerts a force on other moving charges and magnetic dipoles nearby. Because it has both magnitude and direction, the magnetic field is a vector quantity.
magnetic field LINE

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Magnetic Effect Of Electric Current Direct Current Dc

Magnetic effect of electric current or what is magnetic effect of electric current or explain magnetic effect of electric current class 12 -

The magnetic impact of electric current is the result of moving electric charges and magnetic dipoles creating a force field (magnetic field). The magnetic dipoles and other moving charges near the force field are acted upon by this magnetic field. The magnetic field is a vector quantity with a magnitude value as well as a direction. The moving charges around the pole, which create magnetic fields, might have a variety of reasons.

Maxwell Corkscrew rule or Cork Screw rule-

Thumb rules state that if the thumb of the right hand points along the direction of the current, then the remaining curled fingers of the same hand give the direction of the magnetic field due to the current.

Also read :

right hand thumb rule

Magnetic fields line-

Magnetic dipoles form specific force field lines when a magnetic field is created in a region. Magnetic field lines are what these lines are termed. Magnetic field lines were discovered by Michael Faraday. The direction and strength of the created current are shown by magnetic field lines. The characteristics and properties of magnetic field lines are governed by a number of laws.

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Directions of magnetic lines-

Magnetic field lines have certain orientations because the magnetic field is a vector quantity. Inside and outside of the magnet, magnetic field lines have distinct directions. Outside the magnet, magnetic field lines are directed from the north pole to the south pole. Magnetic field lines inside the magnet travel from the south pole to the north pole.

Magnet field line

(Eg. earth’s magnetic field)

NCERT Physics Notes:

Strength of magnetic field lines-

A magnetic field in the shape of concentric circles surrounds a straight current-carrying conductor. Magnetic field lines can be used to illustrate the magnetic field of a straight current-carrying conductor.

The direction of a magnetic field created by a current-carrying conductor is determined by the current's flow direction.

If the direction of electric current changes, the direction of the electric field reverses.

Assume a vertically hung straight current-carrying conductor is conducting an electric current from north to south, or from up to down. The magnetic field will be rotating clockwise in this circumstance. If the same current flows from south to north through the same conductor, the magnetic field will rotate in the opposite direction.

The Right-Hand Thumb Rule can be used to describe the direction of the magnetic field in electric current flowing through a straight conductor.

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Properties of magnetic lines-

The magnetic field lines have various unique characteristics, which are discussed further below.

The number of lines and their density determine the strength of magnetic field lines.
Magnetic field lines do not intersect.
Magnetic field lines are loops that continue indefinitely.
Arrows represent the direction of the field lines at any moment (south pole to north pole inside the magnet and north pole to south pole outside the magnet).
Near the poles, the density of field lines is very high.

Magnetic field due to a current through a circular loop or Magnetic field due to circular loop-

The magnetic field of circular loop current-carrying conductor is identical to that produced by a straight current-carrying conductor, and the current-carrying circular loop will act as a magnet.

Magnetic field lines in a current-carrying circular loop would be in the shape of concentric circles, and field lines would become straight and perpendicular to the plane of the coil at the center of the circular wire.

magnetic field by coil

The Right-Hand Thumb Rule can be used to determine the direction of the magnetic field in a circular loop.

Magnetic field due to flow of current in solenoid-

A solenoid is a helical coil of wire that is tightly wound and has a small diameter in comparison to its length.

Solenoid-

The current-carrying solenoid produces a magnetic field similar to that of a bar magnet. A solenoid's one end acts as a south pole, while the other acts as a north pole. A solenoid produces a parallel magnetic field, comparable to that of a bar magnet.

Solenoid

A solenoid's strong magnetic force can be utilized to magnetize a piece of magnetic material. An electromagnet is a magnet that has been formed in this way.

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Frequently Asked Questions (FAQs)

1. What is the definition of a magnetic field?

The magnetic dipoles of a magnet form a force field due to moving electric charges. A magnetic field is the force field area that surrounds a magnet.

2. What is the definition of Magnetic Intensity?

Several magnetic field lines can be found in a magnetic field. These lines are separated by a certain amount of space. They don't come into contact with one other. The strength of a magnetic field, also known as magnetic intensity, is defined as the density of magnetic field lines in a magnetic field. Magnetic intensity is always unique in a certain location of the magnetic field.

3. Can you describe the magnetic effects of electric current?

Current Flowing Through a Circular loop Creates a Magnetic Field The magnetic field created by a circular current-carrying conductor is identical to that produced by a straight current-carrying conductor, and the current-carrying circular loop will act as a magnet.

4. In which gadget does the magnetic effect of current come into play?

The sound is produced by an electromagnet, which works on the magnetic effect of current.

5. Where does the magnetic effect of electric current direct current DC come into play?

Electricity powers appliances such as light bulbs, fans, televisions, refrigerators, washing machines, motors, and radios. A magnetic field is created when an electric current travels through a current-carrying wire or coil.

6. Why is there a magnetic field in the current?

When an electrical charge moves, a magnetic field is created, as Ampere predicted. As with electrical current running via a wire, the spinning and orbiting of an atom's nucleus produce a magnetic field. The magnetic field is determined by the direction of the spin and orbit.