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2.4. A current through a horizontal powerlineflows in east to west direction. What is thedirection of magnetic field at a pointdirectly below it and at a point directlyabove it ?

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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