Wednesday 5 June 2013

Choose the correct option. The magnetic field inside a long straight solenoid-carrying current (a) is zero

Q. No 3: Choose the correct option.
The magnetic field inside a long straight solenoid-carrying current
(a) is zero
(b) decreases as we move towards its end
(c) increases as we move towards its end
(d) is the same at all points

Ans: (d) The magnetic field inside a long straight current-carrying solenoid is uniform which is represented by parallel lines. Hence it is same at all points.
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4 comments:

  1. Vanshikha19 June 2017 at 12:26

    Shouldn't 'b' be the correct option. Afterall the distance between magnetic field lines go on increasing as we move towards the poles thus leading to a decrease in the magnetic strength...

    ReplyDelete
  2. Unknown3 January 2019 at 20:01

    Good...but i m also.confused in options b and d

    ReplyDelete
  3. Lennox13 July 2019 at 21:49

    but i never quit never will never ever

    ReplyDelete

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