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प्रश्न
A current flows downwards in a wire that passes vertically through a table top. Will the magnetic field lines around it go clockwise or anticlockwise when viewed from above the table?
उत्तर
If current flows downwards in a wire that passes vertically through a table top, the magnetic field lines around it will go clockwise when viewed from above the table. This is concluded by applying right-hand thumb rule.
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