$2$ Toroidal coil is a component shown in the figure below. In the coil, there are $N$ turns and the

current flowing there is I. Using Ampere's law, develop an expression for the magnetic field

strength along the axis of the core of the toroid at distance $r$ from the center of the toroid. Which

vector components of the field can be calculated? Determine the magnetic field strength in the

middle point of the toroid.

Task for the table group: Discuss the nature of magnetic field as compared to electric fields.

Considering the field lines of electric field duo to an electric charge and field lines of magnetic field

due to current, what are the most notable differences? The textbook discusses "magnetic

charges". What would happen, e$.$g$.,$ to a bar magnet if you break it in two parts? Can you get a

isolated north and south poles?