Question

Which of the following statements is incorrect regarding magnetic field lines ?; A. The direction of magnetic field at a point is taken to be the direction in which the north pole of a magnetic compass needle points.; B. Magnetic field lines are closed curves; C. If magnetic field lines are parallel and equidistant, they represent zero field strength; D. Relative strength of magnetic field is shown by the degree of closeness of the field lines

Answer 1

Answer:

C is incorrect AnD THE RIGHT ANSWER IS --if magnetic field lines are parallel and equidistant they represent a uniform magnetic field.

Answer 2

The incorrect option is: If magnetic field lines are parallel and equidistant, they represent zero field strength.

• The first statement is true as we know that the needle of a magnetic compass makes a tangent to the magnetic field and the direction of the magnetic field is the direction in which this needle points in the North direction.
• The second and fourth statements are other very famous properties of magnetic field lines.
• But the third statement is incorrect because parallel and equidistant magnetic field lines show that the magnetic field lines in that area possess uniform strength.