''A potentiometer with R = 100 Ohm is connected to an operating voltage of Ub = 10 V. At the center tap, 6V are measured against ground. At time t = 15 ms, an inductance to ground with L = 1 H is connected to the center tap. ''

2.1: Calculate the current Iv that the voltage source must deliver at time t = 0ms.

2.2: At time t = 40ms, calculate the current in the coil IL, its voltage UL and the current that the voltage source must supply.

2.3: Calculate for t-> infinite the current Iv that the voltage source has to deliver.

2.5 After a long time (t-> infinite) the voltage source is suddenly separated from the potentiometer. What happens to the inductance, what voltage is on the coil (calculation!) And how does it work?

My questions:

1.) The center tap probably means the center tap of a trimming potentiometer, right?

2.) Is it always about a real voltage source when talking about an operating voltage? Depending on that, I would have to draw another equivalent circuit diagram.

3.) Does it have an impact on my circuit if the technical current has to flow through my coil first before it goes through? a resistance can flow? So what would happen if I swapped coil and resistor in the circuit in a series connection?

I hope you can help me because I'm very confused about this.

Moderator edit: Moved to Homework Help