Final answer:
The Thevenin equivalent resistance for a circuit with a Norton equivalent of a 6mA current source in parallel with a 26.4kΩ resistor is also 26.4kΩ, as resistances remain the same when converting between these two equivalences.
Step-by-step explanation:
If a circuit has a Norton equivalent consisting of a 6mA current source in parallel with a 26.4kΩ resistor, the Thevenin equivalent resistance would be the same as the Norton equivalent resistance since these two equivalences are interchangeable. Therefore, the Thevenin equivalent resistance of the circuit is also 26.4kΩ. Remember that when converting between Thevenin and Norton equivalents, the resistances remain unchanged while the sources are converted between voltage and current sources while retaining the same power.