State important features of the magnetic field obtained inside the solenoid. Write one use of solenoid.
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28
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The two features of the magnetic field are: The lines will never intersect each other. The lines are the closed loops. The polarity will be the North Pole and the S pole as it will be determined with the help of End rule.
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19
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The magnetic field pattern inside the solenoid is uniform. Which indicates that a current carrying solenoid is acting as a bar magnet.
If a soft iron core is inserted inside the solenoid, and current is passed through solenoid,it forms an electromagnet whose magnetic strength can be increased either by increasing the current flowing through the solenoid coil,or by increasing the number of turns in the solenoid coil for a given length
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