The current in the complete circuit is 8A, the external resistance of the circuit is 4 ohms

The current in the complete circuit is 8A, the external resistance of the circuit is 4 ohms, and the internal resistance is 1 ohm. Calculate the EMF of the current source.

To calculate the desired EMF of the current source, we will use the formula: ε = I * (R + r).

Variables: I – current in the complete circuit (I = 8 A); R – external resistance (R = 4 Ohm); r – internal resistance (r = 1 Ohm).

Let’s calculate: ε = I * (R + r) = 8 * (4 + 1) = 40 V.

Answer: The EMF of the current source is 40 V.