The directions of the magnetic field as given by Fleming's rule for the solenoid along:
Correct answer: B. The axis of the solenoid
- A. Normal to the solenoid
- B. The axis of the solenoid
- C. Can't be taken
- D. None of the above
Explanation
Option A: The magnetic field inside a solenoid is parallel to the axis of the solenoid, so the magnetic field is not normal to the solenoid. Option B: The direction of magnetic field as given by Fleming's right-hand rule for a solenoid is along the axis of the solenoid.Fleming's right-hand rule states that if you curl the fingers of your right hand in the direction of the current, your thumb will point in the direction of the magnetic field. In the case of a solenoid, the current flows through the wire in the direction of the axis of the solenoid, so the magnetic field is also parallel to the axis of the solenoid. Option C: The direction of the magnetic field cannot be taken along the tangent to the magnetic lines of force. This is because the magnetic field lines are tangent to the magnetic field at each point, but the direction of the magnetic field is not the same as the tangent to the magnetic field lines. Option D: The direction of the magnetic field as given by Fleming's right-hand rule for a solenoid is along the axis of the solenoid. Therefore, none of the other options are correct.
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