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What is the difference in the direction of the magnetic field produced around conductor by dc flow and ac flow?
The direction and amplitude of the magnetic field around a wire depend on
the direction and amplitude of the current through the wire.
When the wire carries DC, the direction and amplitude of the current in the wire
are constant, so the direction and amplitude of the magnetic field around the wire
are constant.
When the wire carries AC, the direction of the current in the wire is periodically reversing
and its amplitude typically changes, so the direction of the magnetic field around the wire
is periodically reversing and its amplitude is typically changing.
What else can I help you with?
Why are eddys formed in a conductor in an external magnetic field?
Eddy currents are electric currents that are produced inside conductors, through the process of changing the magnetic field in the conductor. The external magnetic field is used as a barrier or skin to protect the eddy.
In what way is the motional emf produced in a conductor placed in a magnetic field translated in to the relevant mathematical relation?
The motional electromotive force (emf) produced in a conductor moving through a magnetic field is described by Faraday's law of electromagnetic induction. The relevant mathematical relation is given by the equation ( \mathcal{E} = -\frac{d\Phi_B}{dt} ), where ( \mathcal{E} ) is the induced emf and ( \Phi_B ) is the magnetic flux. For a straight conductor of length ( L ) moving with velocity ( v ) in a uniform magnetic field ( B ), the induced emf can also be expressed as ( \mathcal{E} = B L v ). This relation illustrates the direct dependence of the induced emf on the magnetic field strength, the length of the conductor, and its velocity through the field.
What is produced if the poles of atoms line up in the same direction?
If the poles of atoms line up in the same direction, it creates a strong magnetic field. This alignment is the basis for ferromagnetism, where materials like iron and cobalt can become magnetic.
Reverse the poles produced in a coil?
To reverse the poles produced in a coil, you can simply reverse the direction of the current flow through the coil. This will change the magnetic field orientation and reverse the poles.
SI unit of magnetic-induction?
Electromagnetic induction is the process of inducing electric current in a coil with the help of a magnet.Whenever a conductor is moved through a magnetic field, or the magnetic field fluctuates in strength (as with an AC electromagnet), a current will be induced in that conductor. Induction cooktops work by passing a large AC current through a conductor under the cooktop, creating a fluctuating magnetic field which induces an electric current through the cookware - heating the cookware by electrical resistance.The process by which a substance, such as iron or steel, becomes magnetized by a magnetic field. The induced magnetism is produced by the force of the field radiating from the poles of a magnet.CommentFurther to the original answer, it is a voltage that is induced into a conductor, NOT a current.
What are three ways you can change the magnetic field produced by a current?
You can change the magnetic field produced by a current by altering the strength of the current flowing through the conductor, changing the direction of the current flow, or varying the distance between the conductor and the point where you are measuring the magnetic field.
How can the magnetic field produced around a current carrying conductor be detected?
The magnetic field produced around a current carrying conductor can be detected using a magnetic compass, a Hall effect sensor, or a magnetometer. These devices can detect the direction and strength of the magnetic field generated by the current flowing through the conductor.
What is the left hand rule for conductors?
The left-hand rule for conductors states that if you point your thumb in the direction of the current flow and your fingers in the direction of the magnetic field, your palm will face in the direction of the force on the conductor. This rule helps to determine the direction of the force experienced by a current-carrying conductor in a magnetic field.
What happens when an electrical current runs through a conductor?
When an electrical current runs through a conductor, electrons flow in the direction of the current. This flow of electrons creates a magnetic field around the conductor. The amount of current flowing through the conductor is directly proportional to the strength of the magnetic field produced.
How is magnetic-force produced?
Magnetic force is produced by moving electric charges. When electrons move through a conductor, they create a magnetic field around the conductor. This is known as electromagnetism and is the basis for the generation of magnetic force.
What is lenz law of electromagnetic induction?
Lenz's law states that 'for a current induced in a conductor by a changing magnetic field, the current is in such a direction that its own magnetic field opposes the change that produced it.'
What is the Flemings left hand rule?
The direction of force produced on a current-carrying conductor placed in a magnetic field can be determined by this rule. the thumb, forefinger and middle finger of the left hand mutually at right angles to each other, such that the forefinger is in direction of flux, and the middle finger is in a direction of current flow in the conductor, then the thumb indicates the direction of motion of the conductor.
What Created around a conductor when electrons flow through that conductor?
Whenever a charge passes through a conductor, a magnetic field is produced. Hence, whenever a current carrying conductor is placed in a magnetic filed, it will experience a force whose direction is determined by Fleming's left hand rule.
What are the three main characteristic of a magnetic field produced by current?
The three main characteristics of a magnetic field produced by current are: Direction: The field lines form closed loops and follow the right-hand rule. Strength: The strength of the field is directly proportional to the current flowing through the conductor. Distance: The magnetic field strength decreases as you move away from the current-carrying conductor.
Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor.?
Increasing the current passing through a conductor results in a stronger magnetic field, not a weaker one. Therefore, increasing the current from 10 A to 15 A should increase the strength of the magnetic field produced by the conductor.
In colomn answer of difference between statically indused emf and dynamicaly indused emf?
Statically induced emf is produced by the relative motion between a conductor and a magnetic field, while dynamically induced emf is generated due to a change in the magnetic field strength experienced by a conductor. Statically induced emf does not require any physical movement of the conductor, while dynamically induced emf is produced when the magnetic field changes over time.
How can you reverse the direction of the magnetic field in a wire produced by an electric current?
You can reverse the direction of the magnetic field by reversing the direction of the electrical current.
