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Question
When does a solenoid behave as a magnet? Draw the pattern of the magnetic field produced inside it showing the directions of the magnetic field lines.
Solution
When a current is run via a solenoid, it acts like a bar magnet. Its opposite end functions as the magnetic South Pole and its opposite end as the magnetic North Pole. The magnetic field produced resembles that of a bar magnet. In other words, the field lines appear from one end and merge into another, much like a bar magnet.
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