- #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.