Let's analyse these:Which of the following are self-contradictory combinations of circuit elements?
a. A 12-V voltage source in parallel with a 2-A current source.
b. A 2-A current source in series with a 3-A current source.
c. A 2-A current source in parallel with a short circuit.
d. A 2-A current source in series with an open circuit.
e. A 5-V voltage source in parallel with a short circuit.
Seems legit, and I imagine it could be connected in several ways.a. A 12-V voltage source in parallel with a 2-A current source.
Why is this contradictory? Wouldn't these two current sources in series be equivalent to one single current source of 5 A?b. A 2-A current source in series with a 3-A current source.
This sounds contradictory to me, but apparently it's not. I wonder why.c. A 2-A current source in parallel with a short circuit.
Why is this contradictory? Although of course no current will go through an open circuit, but let's say there is a current source in series with a closed circuit (which I assume is not contradictory), why would it suddenly be contradictory if the circuit is opened?d. A 2-A current source in series with an open circuit.
This sounds contradictory to me, and apparently it is. But I don't see why this is contradictory when c. is not.e. A 5-V voltage source in parallel with a short circuit.
Some help / clarification of this would be appreciated.