Difference between magnetic field and magnetic field lines?

Answer:
A magnetic field is the area surrounding a magnet in which the effects of that magnet may be observed.
A magnetic field is represented by imaginary lines of force which we call magnetic flux (symbol the Greek letter, 'phi'). Flux is measured in units called webers (pronounced 'vay-bers'). Its intensity is called magnetic flux density (B), defined as the flux per unit area, measured in webers per square metre, given the special name tesla.
First answer by LazyGenius343. Last edit by Innocent mathuthu. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].