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Example 13.1A current through a horizontal power line flows in east to westdirection. What is the direction of magnetic field at a point directhbelow it and at a point directly above it? |
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Answer» The current is in the east-west direction. Applying the right-hand thumb rule, we get that the direction of magnetic field at a point below the wire is from north to south. The direction of magnetic field at a point directly above the wire is from south to north. |
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