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An electromotive force (emf) is induced in a coil when there is a change in magnetic flux passing through the coil. This change in magnetic flux can be caused by either moving a magnet near the coil or by changing the current flowing through a nearby coil. According to Faraday's Law of electromagnetic induction, the emf induced in the coil is proportional to the rate of change of magnetic flux.
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When is induced electromotive force produced in a coil placed near a magnet?
An induced electromotive force is produced in a coil placed near a magnet when there is a relative motion between the coil and the magnetic field. This motion causes a change in the magnetic flux passing through the coil, leading to the generation of an electromotive force according to Faraday's law of electromagnetic induction.
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 the induced emf in the coil when a magnetic field is applied?
When a magnetic field is applied to a coil, it creates an induced electromotive force (emf) in the coil. This emf is generated due to the change in magnetic flux through the coil, according to Faraday's law of electromagnetic induction.
What are the factors that determine the amount of induced current?
The factors that determine the amount of induced current in a coil include the rate of change of magnetic flux through the coil, the number of turns in the coil, and the resistance of the coil. Faraday's law states that the induced electromotive force (emf) is directly proportional to the rate of change of magnetic flux.
What is the effect of moving into a coil of more loops?
Moving into a coil with more loops increases the magnetic flux linked with the coil, resulting in a higher induced electromotive force (emf) in the coil. This leads to a stronger current being induced in the coil due to Faraday's law of electromagnetic induction.
When is induced electromotive force produced in a coil placed near a magnet?
An induced electromotive force is produced in a coil placed near a magnet when there is a relative motion between the coil and the magnetic field. This motion causes a change in the magnetic flux passing through the coil, leading to the generation of an electromotive force according to Faraday's law of electromagnetic induction.
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 the induced emf in the coil when a magnetic field is applied?
When a magnetic field is applied to a coil, it creates an induced electromotive force (emf) in the coil. This emf is generated due to the change in magnetic flux through the coil, according to Faraday's law of electromagnetic induction.
What are the factors that determine the amount of induced current?
The factors that determine the amount of induced current in a coil include the rate of change of magnetic flux through the coil, the number of turns in the coil, and the resistance of the coil. Faraday's law states that the induced electromotive force (emf) is directly proportional to the rate of change of magnetic flux.
What is the effect of moving into a coil of more loops?
Moving into a coil with more loops increases the magnetic flux linked with the coil, resulting in a higher induced electromotive force (emf) in the coil. This leads to a stronger current being induced in the coil due to Faraday's law of electromagnetic induction.
What four factors affect the magnitude of the induced emf in a coil of wire?
The magnitude of the induced electromotive force (emf) in a coil of wire is affected by four main factors: the strength of the magnetic field, the area of the coil, the number of turns in the coil, and the rate of change of the magnetic field. According to Faraday's law of electromagnetic induction, a stronger magnetic field or a larger coil area increases the induced emf. Additionally, more turns in the coil enhance the induced voltage, while a faster change in the magnetic field also contributes to a greater induced emf.
Why there is an induced current in a coil when a bar magnet is thrust into the coil?
photons are trapped in the magnetic field when the photon hits the electron of the copper coil the photon take the spot of the electron , its free to move.Answer2: The induced current is a consequence of the conservation of the magnetic field.AnswerCurrent isn't induced into a coil -it's voltagethat is induced. Any current flows as a consequence of this induced voltage only if there is a load connected to the coil.
What are the reasons why a current is induced in a coil?
Current is not induced into a coil. It's voltage that is induced into a coil. If the coil is connected to a load, or even short circuited, then a current will flow as a result of the induced voltage -but it's the voltage, not the resulting current, that's induced!Voltage is induced into a coil because the the changing magnetic field, due to the change in current (0 to Imax or vice versa) applied to that coil. The process is called 'self induction'.
Why there is an induced current in a coil when a coil is rotated between two magnets?
When a coil is rotated between two magnets, the magnetic field lines cut across the coil, inducing an electromotive force (EMF) according to Faraday's Law of electromagnetic induction. This EMF creates an induced current in the coil as the electrons inside the coil are pushed in a direction that opposes the change in magnetic field, following Lenz's Law.
What happens if a coil is rotated between two magnets?
When a coil is rotated between two magnets, an electric current is induced in the coil due to the changing magnetic field. This phenomenon is known as electromagnetic induction. The induced current produces an electromagnetic force, creating a torque that causes the coil to rotate. This is the principle behind electric generators.
What is emf induced in a motor's coil that tends to reduce the current in the coil of the motor?
BACK emf induced in a motor's coil that tends to reduce the current in the coil of the motor. The answer should be 'back'.
Is flow of induced current necessary when induces emf is being produced?
There is no such thing as an 'induced current'. Voltages are induced, not currents. If a voltage is self-induced into a coil, then that voltage will oppose any change in current. If a voltage is mutually-induced into a separate coil, no current will flow unless that coil is connected to a load.
