I don\'t fully understand the question being asked and how it relates to the ans
ID: 1883963 • Letter: I
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I don't fully understand the question being asked and how it relates to the answer. Here is the solution from the manual. Could someone just claify what is being said here? So the question says that the path is closed and that the net magnetic field intensity is 0 at a point. Then it asks does that nessisarily mean that it is 0 everywhere right? I would say no because couldn't there be other factors negating the field intensity at that point? Why would it be 0 everywhere otherwise? The answer says it would happen if that path was not closed but the question says it is... I am confused.
If the line integral of H over a closed contour is zero, does it follow that H 0 at every point on the contour? If not, what then does it imply? Step-by-step solution Step 1 of 1 The Ampere circuit law states that the line integral of H around a closed path is equal to the current traversing the surface bounded by that path, and the Ampere law can only be applied to current flowing through a closed path. But if the current is not enclosed in the closed path, the line integral of H along it vanishes.Explanation / Answer
If the line integral of H over a closed contour is zero, it means that the current bounded by that closed surface is zero. Ampere's law says the same. If there is no current flowing through that closed path, then we can say that the integral of H is zero, but it doesn't imply magnetic field intensity also need to be zero at each point. H may vary from point to point, but over the whole contour it will be zero.
It is same like dispalcement. Suppose we have a closed loop such that its initial and final points are same, then the average dispalcement of the whole loop is zero but at any point on the loop, dispalcement from starting point will not be zero. So, line integral of H equals to zero implies that there is no current bounded by the closed surface.
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