Thevenin equivalent of resistor only circuit

[bpatyk2]

Homework Statement

Find thevenin equivalent of resistor circuit

Homework Equations

The Attempt at a Solution

This may be a dumb question, but does a thevenin equivalent NEED to have a voltage source? On my final exam there was a question that asked for the thevenin equivalent of a circuit that was only resistors. Finding the thevenin resistance was no problem so I just put that resistance in series with a 0V voltage source. Can the thevenin equivalent be just a resistor?

 

[phinds]

Hm ... I think in practical terms it's pretty meaningless to call a resistor network reduced down to one resistor a "Thevenin equivalent" but I suppose technically it is.

 

[bpatyk2]

Yeah that's kinda why I don't see why that type of circuit would be used on an exam to ask for a thevenin equivalent circuit. If there was even one type of independent or dependent source involved i could see the point, but there was none.

 

[donpacino]

The Thevian equivalent circuit is used for giving simple values to complex circuits.

There are many situations where you are going to find the equivalent resistance of a circuit using the thevian theorem, such as finding a circuits input resistance, output resistance, and load. In all of those cases, there will not be any voltage sources on the circuit.

 

[Su3liminal]

I see your point. However, that is pretty common. Think of it as a circuit with 0 V (independent) source.

 

[Alpharup]

Hey,thevinin voltage across which two point? Is it across a resistor? Or any resistor in the network?
I think the question lacks clarity