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Question
Sometimes we show an idealised magnetic field which is uniform in a given region and falls to zero abruptly. One such field is represented in figure (35-E12). Using Ampere's law over the path PQRS, show that such a field is not possible.
Sometimes we show an idealised magnetic field which is uniform in a given region and falls to zero abruptly. One such field is represented in figure (35-E12). Using Ampere's law over the path PQRS, show that such a field is not possible.
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Solution
We know ∫ B. dl=μoi
Theoretically, at any point A inside
B = 0
If current passes through the loop PQRS Then
B = 0
As B at A is zero, so there will be no interaction, but practically this is not true. Thus, such a field is not possible.
We know ∫ B. dl=μoi
Theoretically, at any point A inside
B = 0
If current passes through the loop PQRS Then
B = 0
As B at A is zero, so there will be no interaction, but practically this is not true. Thus, such a field is not possible.
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