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A very long straight wire lies in the plane of the paper and carries current; in the direction shown: A circular loop of wire also lies in the plane of the paper to...

Question

A very long straight wire lies in the plane of the paper and carries current; in the direction shown: A circular loop of wire also lies in the plane of the paper to the right of the wire; The loop is moved to the right (away from the wire) at a constant velocity; v which direction will the induced current flow in the loop?ClockwiseInsufficient Information is given to answer this questionCounter ClockwiseNo current will flow in the Ioop

A very long straight wire lies in the plane of the paper and carries current; in the direction shown: A circular loop of wire also lies in the plane of the paper to the right of the wire; The loop is moved to the right (away from the wire) at a constant velocity; v which direction will the induced current flow in the loop? Clockwise Insufficient Information is given to answer this question Counter Clockwise No current will flow in the Ioop



Answers

mmh A circular loop of wire rests on a table. A long, straight wire lies on this loop, directly over its center, as the drawing illustrates. The current I in the straight wire is decreasing. In what direction is the induced current, if any, in the loop? Give your reasoning.

Hello, We're gonna be using lenses law for this question. Okay, So this summer answers for all the loops involved. Okay. Thanks very much.

Hi. In the given problem, yeah, there is Are conducting law lying in the horizontal plane on the surface of the table and there is a horizontal wire kept over this loop which is carrying a current I threw it. His current passing through the conductor is decreasing in magnitude. So the magnetic field around this conductor, which is outward through the upper half of this school and inward. True, the lower half of this circular coin current is decreasing, which creates are decreasing an upward degrees magnetic field through the upper half of coil and our downward decreasing magnetic field and hence magnetic flux. True, the lower half of the loop, so the induced magnetic field will be as here. This magnetic field is decreasing and in upward direction. So induced magnetic well should be increasing in upward direction in the upper half will be increasing a world through the upper hub means this magnitude should come out of the upper half of the direction, so it should behave like North Pole. The upper half should behave like North Pole, and hence the direction of current induced in the upper half should be counter clock wise. Similarly, in the lower house as inducing magnetic It is downward Decreasing so inducing magnetic field So induced magnetic field as the inducing magnetically is downward decreasing So that induced magnetic will s Berlin's as long should be inward increasing it's magnetically should enter into it So this face will start behaving like south fold So the direction of current induced and it should be clock Why is so as the current in lower hug and upper half of that semi circles of the loop, We should say the loo are equal in magnitude and oppose it in direction. So net electric current induced in the loop is zero which is the answer for the given problem. Thank you.

High in the given problem here. This is the street current carrying conductor, which is scary, a constant current i towards right and nearby it below it. There is a circular loop of conducting wire which can be moved in three different directions. First of all, it can be moved close to the straight conductor in part a of the problem. Then, in part B of the problem, we will move this loop parallel to the conductor and in part C, we will move it away from the conductor. Now, using right hand Tom Rule, The direction of magnetic field around straight current carrying conductor is such debt. It is out off the plane of paper above the conductor and directed into the plane of paper below. It means we can represent this direction of magnetic filter. It is coming out of the Plano paper above the conductor, which is represented with the help of dots and below the conductor. It is directed into the plane of paper, which is shown with the help of crosses like this. Now, in the first part of the problem, where the loop is being moved close to the conductor means the magnetic field the inward magnetic will link through this loop will be increasing. Then loop is moved close to the conductor. The inward magnetic field leaned through it. We will be increasing. So as per lenses law to propose it, a magnetic field should be induced in the loop in a direction opposite to this inducing magnetic field means it should be outward. Increasing means the induced magnetic field should be in outward direction. And we know magnetic will comes out of a North Pole only. So this upper face of the loop should start behaving like North Pole means the direction of current induced and it should be counter clockwise. Answer For the first part of the problem. No. Then the loop is moving parallel to the conductor, so the magnetic field linked through it will remain constant. Magnetic field and hence magnetic flux linked through it will remain constant because, as we know, the magnetic field around the street, current carrying conductor is given by the expression you're not by four by into two, I buy art. So, apart from all other things which are constant, this distance R will also remain same when the law will be moving parallel to the conductor. Hence the magnetic will be will remain constant. So the magnetic flux will remain constant hands. We can say no. I m f or current will be induced in that guy. Now, in part c, the loop is moving of the from conductor. So this time in world magnetic field linked through this loop should be decreasing as on increasing our means. The distance the magnetic field will decrease, so the magnetic flux will also decrease. So to oppose it, the induced magnetic field should be in world and increasing It should be increasing in inward direction. And we know magnetic enters only into a south pole. So this upper face of the loops should start behaving like South Pole. And we know only a clockwise current gives rise to a south polarity. So now the direction of current induced and it should be clockwise. This is the answer for the third part of the problem. Thank you.

This example. We're going to string up a conductive loop of wire here in a pendulum like situation where it swings down into this region, where there is a uniform, constant magnetic field. And because it swings into a region where there is a magnetic field, the flux through the loop is going to change. And by Faraday's law of induction, there will be an induced E. M F in the loop and therefore introduce Crane a little. And what we want to figure out is what is the direction of the current flowing through the loop at Point A and Point B as I marked on the diagram here, when it's swinging from left to right and when it's running from right to left. So first I'm gonna look at left to right, and we're gonna talk about the direction in terms of these points X, Y and Z that we've marked on our loop. So will either say that the current is flowing from X, y, Z or Z. The white acts, but ultimately it's just clockwise or counterclockwise. Okay, so when the pendulum is going left to right, it's coming down like this and entering the magnetic field, we can see that the flux is going to be increasing, so Blocks is going up and we know that the direction of the flux he is going to be in the direction of positive X will call it. It's one call this direction plus X and Mr Actually minus X. And since we know the flux is increasing in that direction, ah, currents gonna be created that will have a magnetic field, that it poses that direction. So we want to create a magnetic field in minus X, so we want be induced in minus X. And to do that, if we point our some in the direction of the induced field we want and curl our hand around with your fingers slightly girl, we can see that the direction is going to be from extra y to Z because our fingers will wink in the direction of the current. So xto y z So we're just gonna use the right hand rule to did terminologies now. Okay, so now it will be at this point, it's going to be coming out of the magnetic field so the flux will be going down if we're exiting the field so flux is going down and the direction of the field is again plus X. So since the flux is going down, we want to create a magnetic field that has the direction the same as the current magnetic field that's creating ORF looks. So for this one the opposite of the 1st 1 We want the direction of the field for me induced current to be in positive acts. So again, if you point your direction in the positive X direction and you curl your fingers and then start curling your wrist around the little wire there, you can see that your fingers are going to curl from Z to Y to X. So again, by the right hand rule and lenses law, the current in the that situation will flow from Gina White Axe. Alright, now for situation, too. We're going right. Two left and be, and we'll start with because, well, imagine that it's swimming back. So let's go back toward your own here. So now it will be swinging back in like this, and on the other side will be swinging out like that. So when it swings back in, we're gonna have an increasing flux and it's going to be pointing in. The magnetic field will be pointing in the plus extraction. As always, the last looks increasing and it's always be is in plus X. And so since the field is er, the flux is increasing in the plus X direction, we will want to create a field that points in the opposite direction. So because of these two fax, we want the magnetic field from our induced currents to be in the minus X direction. And so again, let's use the right hand rule to figure out the direction of our current. In fact, we can just drive down here Nice drawn example, but helped out, actually. So here is our well, discs will back. If we have an induced the field is going to point out, Mr Action, which your thumb in the direction of that be Phil, curl your fingers and see which way you're the tips, your fingers point. You'll see that they wait around this direction. So the order there which will go through these points will be extra. Why does he Yeah, so opposite of the other situation. Okay. And now for the last situation, we're leaving the field, so we will have a decreasing flux. So flux is going down. And, as always, the Byfield is there any plus extra action? So if the flux is going down and the field is any plus X direction, we will want to have an induced field in the plus X direction. And again, if we make another little drawing here, just toe say we did. We want an induced field to be going in this direction. And if that's the case again, just by the right hand rule, we will in our current to be flowing around in this direction. So that's gonna be from zero white attacks so easy to wind X. All right, there you have it. We figured out the direction of the current and the left to right and right to left scenarios for these two positions of this conductive wire loop entering a uniformed, constant magnetic field


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