In a network with an EMF 201V, a 100 Ohm resistor is connected. What is the internal resistance of the

In a network with an EMF 201V, a 100 Ohm resistor is connected. What is the internal resistance of the current source if the current strength is 2A?

The source current can be calculated using the formula:
I = Σ / (R + r), where I is the current in the source (I = 2 A), Σ is the electromotive force (Σ = 201 V), R is the external resistance of the source, resistor (R = 100 Ohm), r – internal resistance of the current source (Ohm).
Let us express and calculate the internal resistance of the current source:
r = Σ / I – R = 201/2 – 100 = 100.5 – 100 = 0.5 Ohm.
Answer: The internal resistance of the current source is 0.5 ohm.