1.

A horizontal power line carries a current from east to west direction. What is the direction of the magnetic field due to the current in the power line at a point above and at a pointbelow the power line ?

Answer»

SOLUTION :According to right-hand THUMB RULE,
i] The direction of magnetic field at a point above the power line is form SOUTH to North.
II] The direction of magnetic field at a point below the power line is from North to South.


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