- #1

PhDeezNutz

- 756

- 516

- Homework Statement
- Given the reference polarities for current directions along with the current/voltage readout.....find the power developed in the circuit. (See picture below)

- Relevant Equations
- ##p = vi## if reference current is in direction of decreasing potential (##+## to ##-##)

##p = - vi## if reference current is in the opposite direction of decreasing potential (##-## to ##+##)

Here is the problem with my power calculations in blue. My reasoning is that + terminal is higher potential, − terminal is lower potential and if the reference goes in the direction of decreasing potential then p=vi and if it goes against the decreasing potential then p=−vi. I've applied this reasoning and I have concluded that this circuit doesn't develop power. Which seems counterintuitive given that the problem statement is "how much power does the circuit develop?".

Again I am concluding that the power extracted is less than power delivered and therefore power is being destroyed and not developed?

Do I have serious misunderstandings of passive sign convention or is this a trick question?

Any help is appreciated in advance.

Again I am concluding that the power extracted is less than power delivered and therefore power is being destroyed and not developed?

Do I have serious misunderstandings of passive sign convention or is this a trick question?

Any help is appreciated in advance.