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Are the magnetic field lines closed? Exp...

Are the magnetic field lines closed? Explain.

Text Solution

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1) Magnetic field lines are closed.
2)If we observe the field lines formed by a current carrying straight wire circular field lines are found. They are closed circles.
3) IF we observe the field lines by a current carrying solenoid the field lines out side the solenoid are continuous with those inside.
4) Thus the magnetic field lines are closed loops.
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Knowledge Check

  • Magnetic field lines are

    A
    two dimensional
    B
    three dimensional
    C
    no dimensional
    D
    one dimensional

  • (A) : The trajectory of neutron when it is projected perpendicular to a magnetic field is a parabola . (R) : A moving charge entering parallel to the magnetic field lines moves in a circular path.

    A
    Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.
    B
    Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'
    C
    'A' is true and 'R' is false
    D
    'A' is false and 'R' is false

    • Similar Questions

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    Draw the magnetic field lines in uniform magnetic field.

    Rajkumar said to you that the magnetic field lines are open and they start at north pole of bar magnet and end at south pole. What questions do you ask Rajkumar to correct him by saying "Field lines are closed"?

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