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How would you position a flat loop of wire in a changing magnetic field so that there is no emf induced i the loop?
To position a flat loop of wire in a changing magnetic field so that no electromotive force (emf) is induced in the loop, align the plane of the loop parallel to the direction of the magnetic field lines. This orientation ensures that the magnetic flux through the loop remains constant, even as the magnetic field changes. If the magnetic field changes direction, the loop should be rotated to maintain this parallel alignment, thus preventing any change in flux and the subsequent induction of emf.
Why emf is not induced if a metallic loop is placed in a nonuniform magnetic field?
emf is only induced if the flux through the loop varies with time. if u keep it in a nonuniform magnetic field, the flux wont be uniform throughout the area of the loop, but whatever it will be , it will remain the same.. as at a point in the field, the field strength is same. means the magnetic field is not same at all points but if u consider a single point, there, it remains the same, its not changing. hence no emf is induced. hope u got it.
Which law states that voltage is induced in a circuit whenever the flux linking the circuit is changing and that the magnitude of the voltage is proportional to the rate of change of the flux linkage?
Faraday's law of electromagnetic induction states that a voltage is induced in a circuit whenever there is a changing magnetic field that links the circuit, and the magnitude of the induced voltage is proportional to the rate of change of the magnetic flux.
What is affected by a electromagnet?
Other magnets, as well as magnetic substances such as iron, in which magnetism is induced by the external magnetic field.
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 is the phenomenon that is induced by a changing magnetic field?
The phenomenon induced by a changing magnetic field is called electromagnetic induction.
What is the direction of the induced current in a coil when it is exposed to a changing magnetic field?
When a coil is exposed to a changing magnetic field, an induced current is generated in the coil. The direction of this induced current is such that it creates a magnetic field that opposes the change in the original magnetic field. This phenomenon is described by Faraday's law of electromagnetic induction.
What is the direction of the induced current when a magnetic field is rapidly changing in a coil of wire?
When a magnetic field is rapidly changing in a coil of wire, an induced current is generated in the wire. The direction of this induced current is such that it creates a magnetic field that opposes the change in the original magnetic field. This phenomenon is described by Faraday's law of electromagnetic induction.
How would you position a flat loop of wire in a changing magnetic field so that there is no emf induced i the loop?
To position a flat loop of wire in a changing magnetic field so that no electromotive force (emf) is induced in the loop, align the plane of the loop parallel to the direction of the magnetic field lines. This orientation ensures that the magnetic flux through the loop remains constant, even as the magnetic field changes. If the magnetic field changes direction, the loop should be rotated to maintain this parallel alignment, thus preventing any change in flux and the subsequent induction of emf.
What factors determine the magnitude of induced current in a wire loop when exposed to a changing magnetic field?
The magnitude of induced current in a wire loop when exposed to a changing magnetic field is determined by factors such as the strength of the magnetic field, the rate of change of the magnetic field, the number of turns in the wire loop, and the resistance of the wire.
What is induced electric field?
An induced electric field is a field that is created in a region in response to a changing magnetic field. According to Faraday's law of electromagnetic induction, a changing magnetic field induces an electric field in the surrounding space. This phenomenon is the basis for the operation of devices such as generators and transformers.
How does the frequency of a changing magnetic field compare with the frequency of the alternating voltage that is induced?
A changing magnetic field generates an electric field and alternating currents are accompanied (or caused) by alternating voltages.
What is the induced emf in case (a)?
In case (a), the induced emf is the electromotive force generated in a coil or conductor due to a changing magnetic field.
What is maxwell's counter part to faradays law?
A magnetic field is induced in an region of space in which and electric field is changing with time.
What induced voltage opposes the motion that causes it according to .?
Lenz's Law states that the induced voltage in a circuit will create a magnetic field that opposes the change in magnetic flux that caused it. This is to ensure that the original source of the changing magnetic field does not have its energy absorbed or dissipated.
How is a current induced in a wire when a coil of wire moves through a magnetic field?
When a coil of wire moves through a magnetic field, the changing magnetic field induces a current in the wire through electromagnetic induction.
How is voltage induced in a conductor?
Voltage is induced in a conductor when there is a change in magnetic field passing through it, according to Faraday's law of electromagnetic induction. This change in magnetic field creates an electromotive force (emf) that drives the flow of electric current in the conductor.
