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Question : 21
Total: 28
What is a solenoid? Draw the pattern of magnetic field lines of (i) a current carrying solenoid and (ii) a bar magnet. List two distinguishing features between the two fields.
Solenoid is a long cylindrical coil of wire consisting of a large number of turns bound together very tightly.
(i)
Solenoid is a long cylindrical coil of wire consisting of a large number of turns bound together very tightly.
(i)
Solution:
Solenoid is a long cylindrical coil of wire consisting of a large number of turns bound together very tightly.
(a) Magnetic field outside the solenoid is negligible as compared to the bar magnet.
(b) Magnetic field of solenoid can be varied as per our requirement just by changing current or core of solenoid but in bar magnet it is fixed.
Distinguishing features are as follows :
(a) Magnetic field outside the solenoid is negligible as compared to the bar magnet.
(b) Magnetic field of solenoid can be varied as per our requirement just by changing current or core of solenoid but in bar magnet it is fixed.
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