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What does a rapid change of a magnetic field induce?
It does not have to be positive or negative either one will produce reversal of the voltage applied by a factor
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.'
Where do magnetic field lines cross?
Magnetic field lines don't cross.
What is meant by magnetic permeability?
All materials are magnetized when placed in the magnetic field . The material magnetized by the effect of a magnetic field is called magnetic permeability.
What is Magnetic flux density unit?
"Magnetic flux density" is also known as the magnetic field,The SI unit for this is the Tesla, written as T.CommentMagnetic flux density is not "also known as the magnetic field". It describes the intensity of a magnetic field.
Can a changing magnetic field produce a steady electric field?
Yes, a changing magnetic field can induce a steady electric field. This is described by Faraday's law of electromagnetic induction, where a changing magnetic field creates an electric field in the surrounding space.
Why does a transformer require alternating current?
In order to induce voltage as an output, a changing magnetic field is needed. To create a changing magnetic field in the transformer a changing current and that is an alternating current.
Will changing the electric field will have no effect on the magnetic fields of a body?
Changing the electric field in a region can induce a magnetic field according to Maxwell's equations. This is known as electromagnetic induction. So, changing the electric field can indeed have an effect on the magnetic fields of a body.
What can induce an electrical current in a wire?
An electrical current can be induced in a wire by a changing magnetic field passing through the conductor. This phenomenon is known as electromagnetic induction, and it is the basis for the operation of generators and transformers. Moving the wire through a magnetic field or changing the magnetic field around the wire can result in the generation of an electrical current.
Does an electric current produces a magnetic field?
yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.
What causes a vibrating magnetic field?
A vibrating magnetic field can be caused by alternating current flowing through a conductor, which generates a changing magnetic field around the conductor. This changing magnetic field can induce a current in nearby conductors, causing them to vibrate as well. Other sources of vibrating magnetic fields can include electromagnetic radiation and electrical motors.
Is it true that a magnetic field is surrounded by moving electric charges?
Yes, a changing magnetic field will induce an electric field, leading to the movement of electric charges. This phenomenon is described by Faraday's law of electromagnetic induction.
How is electricity and megnetisem related?
When a change occurs within a magnetic field there is an an electrical current present within a wire. As the electricity flows through the wire a magnetic field. The changing magnetic field creates a magnetic field. As this pattern continues these two fields induce each other through space.
Why emf is not zero when field current is zero?
Even when the field current is zero, there can still be a residual magnetic field present in the system, which can induce an electromotive force (emf) in a nearby conductor. This phenomenon is explained by Faraday's law of electromagnetic induction, where a changing magnetic field can induce a voltage in a closed loop.
Does a moving magnetic field produce an electric current?
Yes, a moving magnetic field can induce an electric current in a conductor, according to Faraday's law of electromagnetic induction. This phenomenon is the basis for many applications of electrical generators and transformers.
What is the key when using a magnet and a conductor to induce a current in the conductor?
Motion
How can you induce current in a wire using a permanent magnet?
By moving the wire perpendicular to the magnetic field lines created by the permanent magnet, you can induce a current in the wire through electromagnetic induction. The changing magnetic field as the wire moves induces an electric field, resulting in a current flow in the wire according to Faraday's law.
