After being closed for a while the circuit opens at t = 0.
What is the max value for the voltage across the coil when the current cuts off.
I actually got a solution for this problem already seen here.
I don't understand what he's doing at this part:
di / i = -10.1*10^3 * (50*10^-3) * dt
So I guess 50*10^-3 comes from the value of L.
But why don't we divide the right side with L if we want to remove it from the left side of the equation ? (Here he multiplied the right side with L and it magically disappears from the left? what is this sorcery