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The figure shows a cross-section of a large metal sheet carrying an electric current along its surface. The current in a strip of width dl is Kdl where K is a constant. The magnetic field at a point P at a distance x from the metal sheet will be: |
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Answer» The figure shows a cross-section of a large metal sheet carrying an electric current along its surface. The current in a strip of width dl is Kdl where K is a constant. The magnetic field at a point P at a distance x from the metal sheet will be:
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