What is the direction of the induced current in the circular loop of radius r?
The direction of induced current in the circular loop will be clockwise or anti-clockwise depending upon the direction of current in the straight wire. The amount of induced current will be decided by the velocity with which the loop is moving away from the straight wire.
What is the magnitude of induced current in the circular loop ABCD of radius r when a steady current of I ampere is passed through wire KL?
What is the magnitude of induced current in the circular loop ABCD or radius r, when a steady current of I ampere is passed through wire KL? As current through wire KL is steady, magnetic flux linked with the loop ABCD is cosntant. As there is no charge in magnetic flux, induced current = 0.
When the current in the wire decreases induced current in the loop is?
When the current in the wire AB decreases, the magnetic flux linked with the loop (which is out of the page) will decrease. Hence, the current induced in the loop must be anticlockwise to oppose the decrease in magnetic flux.
What is the direction of the induced current in the circular loop due to the current increasing through the straight conductor?
According to Lenz’s law, the induced current is such that it opposes the increase in the magnetic field that induces it. So, the induced current will be in clockwise direction opposing the increase in the magnetic field in upward direction.
When the current in the wire is increasing?
Electromagnetic Induction. Predict the directions of induced currents in metal rings 1 and 2 lying in the same plane where current I in the wire is increasing steadily. The direction of induced current is predicted using Lenz’s law. So, current is induced in a direction so as to oppose the increasing magnetic flux.
What is the direction of induced current in a metal ring?
clockwise
What is the direction of induced current in metal?
Thus this is implying that the direction of induced current will be anti-clockwise in ring-2. Note: In electromagnetic induction, if the magnetic field direction is moving away from a target area, then according to Lenz’s law, magnetic flux linked with the area decreases, inducing a south-pole and vice-versa.
What is the direction of induced current in metal rings 1 and 2 and current I in the wire is increasing steadily?
What will be the direction of induced currents in metal rings 1 and 2 ? According to Lenz’s law induced current in metal ring 1 will be clockwise and in metal ring 2, induced current will be anticlockwise. …
What is the induced current in the ring?
The induction coil is connected to an alternating power source. When the alternating current is applied to the coil, the metal ring is thrown upwards into the air. The current induced in the metal ring produces a magnetic field that opposes the field generated by the induction coil.
What is the current direction in the closed loop when the metal bar is pushed to move to the right?
An induced current flows clockwise as the metal bar is pushed to the right. The magnetic field points…? If the current is clockwise, one can use the right hand rule to deduce the magnetic field points into the page.
What is the direction of induced current in coil PQ and CD?
Since North Pole of bar magnet is receding away from the coil so the right end of the coil will develop South Pole i.e. induced current as seen from the left end will be anticlockwise.
What is the direction of current in bar magnet?
Equivalently, we can say that the current flows in a direction so that the face of the loop nearer the approaching magnet is a south pole, which then repels the approaching south pole of the magnet. By RHR-2, your thumb points away from the bar magnet.
What is the direction of induced current in each coil If the bar magnet is moving as shown in Figure?
In the figure, N pole is receding away coil (1), so in coil (1), the nearer faces will act as S-pole and in coil (2) the nearer face will also act as S-pole to oppose the approach of magnet towards coil (2), so current in coils will flow clockwise as seen from the side of magnet.
How does mutual inductance of a pair of coil change?
(i) When the separation between the two coils is increased, the flux linked with the secondary due to the current in the primary, decreases. Hence the mutual inductance decreases.
What is mutual inductance of a coil?
Mutual Inductance is the interaction of one coils magnetic field on another coil as it induces a voltage in the adjacent coil. In the previous tutorial we saw that an inductor generates an induced emf within itself as a result of the changing magnetic field around its own turns.
What is the effect of increasing the distance between the primary and the secondary coils?
When the distance between the coils increases, the self inductance of primary and secondary coils decrease slightly. This phenomenon happens with or without ferrite core material.
How does the mutual inductance of a pair of a coil change when distance between the coil is increased?
We know that magnetic flux is inversely proportional to distance. The more is the distance, the less This answers (i), as the distance between the coils increases, the mutual inductance will decrease.
What is the effect of inductance if the distance between the turns increases?
Increased gap between turn could increased reluctance or decreased the inductance. Hence before thinking of inductance, one, has to think of changing in offered reluctance of circuit… ..
How can the self inductance of a given coil?
how can the self inductance of a given coil having N number of turns, area of crossection A and length l be increased. When we insert the dielectric slab in the coil, then permeability of the material increases hence its self inductance increases.
Which of the two has larger value of self inductance?
Solution. Inductor A has the larger value of self-inductance.
What is self inductance?
Self inductance is an effect that is noticed when a single coil experiences the effect of inductance. Under the effects of self inductance and changes in current induce an EMF or electro-motive force in that same wire or coil, producing what is often termed a back-EMF.
Why self induction is called inertia?
Self-induction of coil is the property by virtue of which it tends to maintain the magnetic flux linked with it and opposes any change in the flux by inducing current in it. That is why self-induction is called the inertia of electricity.
Which has larger value of self inductance?
Which of the two has larger value of self inductance ? As ϕ=LI,L=ϕI= slope of ϕ-1 graph. Since slope of ϕ-I graph for inductor A is greater than slope of ϕ-I graph for inductor B, therefore, inductor A has larger value of self inductance than B.