Which of the following statements is correct about the magnetic lines of force inside a current carrying solenoid ?
A
magnetic field lines are along the axis and are parallel to each other
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B
magnetic field lines are perpendicular to the axis and equidistant from each other
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C
magnetic field lines are circular and they do not intersect each other
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D
magnetic field lines are circular at the ends but they are parallel to the axis inside the solenoid.
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Solution
The correct option is A magnetic field lines are along the axis and are parallel to each other The magnetic lines of force inside a current carrying solenoid are along the axis and are parallel to each other. The case is shown in figure.