# Question on voltage in a Thevenin equivalent circuit

1. Jan 30, 2014

### influx

I am trying to refresh my basic electricity knowledge so the questions might be a little stupid lol.

1) Am I correct in saying that the voltage, V1, across the 6 ohm resistor is equal to the VOC?

2) Why isn't the voltage across the voltage source, V2, equal to V1 and VOC? I thought that the voltages in a parallel circuit are equal?

Cheers!

2. Jan 30, 2014

### Staff: Mentor

Yes. There's no potential drop across the 5 Ω resistor when terminals a-b are open as shown.

They are not in parallel. There are components in between their respective leads. In particular, the 3 Ω resistor and the controlled voltage source separate the 10 V supply and the 6 Ω resistor's upper leads.

3. Feb 4, 2014

### influx

So if there are components between the wire connecting two elements, the two elements are not in parallel?

Thanks

4. Feb 4, 2014

### Staff: Mentor

Correct. For two components to be in parallel they must share two nodes.