Learning Goal: I’m working on a electrical engineering exercise and need the explanation and answer to help me learn.
Two resistors are connected in series. One resistor has a resistance of 1000 ohms, and the other resistor value is unknown. the circuit is connected to a 30V power supply and there is a current of 25mA flowing in the circuit. if a 1500 ohms resistor is connected in parallel with the unknown resistor, how much current will flow in this branch?