Question

Which of the following is/are correct about magnetic lines of force ?

• A. Are mere directions
• B. Have no physical reality
• C. Can be used to indicate the direction of the magnetic field at a point
• D. All of these

Answer 1

The correct option is D All of these

Magnetic lines of force are an imaginary concept that provides a very useful way to not only represent but also to define the properties of the magnetic field being evaluated. These lines form unbroken consecutive loops centered around the north and south poles of a magnet. Magnetic lines of force are often used to visually represent the relative strength, area of influence and polarity of a magnetic field.