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CBSE Notes 2011-2012

For a current in a long straight solenoid N-pole and S-pole are created at the two ends. Among the f...

Multiple choice question

For a current in a long straight solenoid N-pole and S-pole are created at the two ends. Among the following statements, the incorrect statement is

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The field lines inside the solenoid are in the form of straight lines which indicates that the magnetic field is the same at all points inside the solenoid

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The strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil

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The pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet

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The N-pole and S-pole exchange position when the direction of current through the solenoid is reversed