In a longstraightsolenoid N - and S- poles are created atthe twoends of thesolenoid . Whichof thefollowingstatementsis incorrect?

In a longstraightsolenoid N - and S- poles are created atthe twoends o

1.	In a longstraightsolenoid N - and S- poles are created atthe twoends of thesolenoid . Whichof thefollowingstatementsis incorrect?
Answer» Thefield lines the solenoidare in THEFORM straightlines indicatingthe magneticfield is sameat all pointsinside the solenoid . The pattern of themagneticfieldassociated with the SOLENOIDIS differentfrom the patter of the magneticfield arounda barmagnet. N-and S- poles exchangepositionswhenthe DIRECTION of thecurrentthrough the solenoidis reversed. Magnetic fieldproduced inside the soleindcan be USEDTO magnetisea bar ofmagneticmaterial likesoft ironwhenplaced insidethesolenoid. Solution :Statement (b) is incorrect. The pattern of magnetic field associated with the solenoid is SIMILAR to the pattern of magnetic field around a bar magnet.