Explanation

Upper half is input, bottom part is output. You can pause/play the animation using the START/STOP button.

--- Input ---

• magnetic field, aka magnetic induction
• electric current through the loop
• length of the side of the loop that is always perpendicular to the field
• diameter - length of the side of the loop that
• momentum of inertia of the loop
• counteraction - something like friction or rotation resistance, effectively it is a momentum acting against existing speed
• commutator - whether a commutator is used

--- Output ---

• simulation showing rotation of the current loop in the magnetic field
• the black arrows display electric current direction
• the pink arrow displays magnitude and direction of actual speed delta (counteraction is ignored in this case)

--- Equations ---

• F = B*I*l*sin(alpha)
• M = F * d = J * epsilon
• omega = epsilon * t
• delta(omega) = I * l * d * B * sin(alpha) * delta(t) / J