A solenoid carrying electric current. What is magnetic field? How is the direction of magnetic field at a point determined?
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Explanation:
A magnetic field line is the path along which a free north-pole tends to move. The direction of a magnetic field at a point is determined by placing a small compass needle. The N - pole of compass indicates the direction of magnetic field at that point
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Answer:
1)magnetic field inside the solenoid (long coil) is parallel or straight.
magnetic field outside the solenoid is similar to the bar magnet ( closed curves of magnetic field lines ).
2)the direction of a magnetic field is determined by the direction of flow of current..
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