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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.
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In a transformer what induces a current in the secondary coil?
The current flowing in the primary generates a magnetic field which induces a current in the secondary winding.AnswerNo current is induced into the secondary winding of a transformer. What is induced is voltage. Current will only flow in the secondary winding if it is connected to the load, and it is the load that determines the current, not the primary current.
What determines whether an induced current is a direct current or an alternating current?
There is no such thing as an 'induced current'. What is 'induced' is a voltage. The direction of the induced voltage is determined by the direction of the changing current that induces that voltage, because the induced voltage will always act to oppose that change in current. So, if the current is increasing, then the direction of the induced voltage will act to opposethe increase in current. If the current is decreasing, then the direction of the induced voltage will act to sustainthat current.
Why is current produced in a coil if it is placed near other coil containg electricity?
When a coil carrying current is placed near another coil, it creates a changing magnetic field which induces a voltage in the second coil according to Faraday's law of electromagnetic induction. This induced voltage causes current to flow in the second coil, resulting in current being produced in the coil.
What is the induced current in the loop when a magnetic field is applied?
When a magnetic field is applied to a loop, it induces an electric current in the loop.
What are the cause of induced emf?
A change in current causes a voltage to be induced into an inductive circuit, which opposes that change of current. This is because the change in current is accompanied by a change in magnetic flux which 'cuts' the conductors and induces a voltage into them.
Why the induced EMF is negative when the voltage in the first coil increasing?
It's an increasing current, not voltage, that induces an e.m.f. into a coil. The reason that the induced e.m.f. opposes the increasing current is all to do with the Law of the Conservation of Energy.
What is induction of electric current?
According to Farady's law, whenever the flux linking with the coil changes, emf will induce in that coil.Actually the material should oppose the flux changes, that opposition is the induced current. Induced current will set own flux, opposite to that of the flux changes.For further details, refer lenz law.
What happens when a magnet moves in a coil wire?
When a magnet moves in a coil of wire, it induces an electric current in the wire through electromagnetic induction. This phenomenon is described by Faraday's law of electromagnetic induction. The induced current flows in the wire in response to the changing magnetic field produced by the moving magnet.
When a conductor is passed through a magnetic field a current is induced in the?
conductor due to electromagnetic induction. This occurs because the changing magnetic field around the conductor induces an electric current to flow through it.
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.
Will there be an induces electric current if the magnet remains at rest?
No, there will be no induced electric current if the magnet remains at rest relative to the conductor. Movement or a change in magnetic field is required to induce an electric current in a nearby conductor through electromagnetic induction.
What do inductors do in a circuit?
DC current has no effect on the inductor(can be considered as a short circuit) as the current does not change in a DC supply voltage this one just produces a magnetic field which remains constant , as the magnetic field is not varying no emf is induced in the circuit , so literally it has no effect on the circuit when the supply is of DC voltage.when an alternating current is set up in a circuit , the Alternating current brings a magnetic field in the inductor which is variable (since the current is varying...) this variable magnetic field induces an emf in the circuit (back emf) which opposes the cause that is producing the change (lenz's law)explanation consider a circuit with an inductor connected to an AC voltageduring the positive half cycle when the voltage increases the current also increases in the circuit [take the current direction as clockwise] this causes a variable increasing magnetic field in the inductor , this magnetic field in turn induces current in the circuit which is opposing the increase in the current flow from the original source, the inverse happen during the decreasing half of the half of the positive cycle , here the induced current adds up with the decreasing current opposing the cause that produced this back current (cause :- decrease in current changes the magnetic field so the induced current is produced ..... it is opposing the change because :- the induced current either decreases the increasing current or increases the decreasing current )
