Question

Magnetic lines of force determines :

• A. The shape of the magnetic field
• B. Only the direction of the magnetic field
• C. Only the relative strength of the magnetic field
• D. Both the direction and the relative strength ofthe magnetic field

Answer 1

Answer: (D)

Answer is D.

The magnetic field at any point in space is a vector quantity. This means there is a direction associated with the field as well as a field strength. Consider the arrow below:
The direction of the magnetic lines of force can be thought of as the direction of the magnetic field. The length of the magnetic lines of force can be thought of as the strength of the field, i.e. the longer the lines, the stronger the field.