Magnetic lines of force are also referred to as flux lines. Which term describes this concept?

• A. current lines
• B. field lines
• C. flux lines
• D. potential lines

Answer: (C)

Magnetic lines of force visualize both the direction and the strength of a magnetic field. When we emphasize how much field passes through a surface, we describe that as magnetic flux, and the lines that depict this are called flux lines. They convey not only where the field points but also how densely it threads through space, which is why this term fits best. Current lines would imply actual moving charges, and potential lines relate to electrostatic potential rather than magnetic flux, while field lines is a broader phrase.