## 26. A practical current source has a finite internal resistance.

## 27. A 680 Ω load resistor, RL, is connected across a constant current source of 1.2 A. The internal source resistance, RS, is 12 kΩ. The load current, RL, is

## 28. The Thevenin equivalent voltage (V_{TH}) is the short-circuit voltage between two terminals in a circuit.

_{TH}) is the short-circuit voltage between two terminals in a circuit.