A simple circuit is solved and power absorbed or supplied by each element is determined. KCL as well as Ohm's law are used in solving the circuit. positive sign convention is used in determining element powers. It is shown and discussed how a source, here current source, can be neither absorbing or supplying power. It is also mentioned that resistors are passive elements and always absorb power/energy.
I started a YouTube channel where is explain how to solve problems. Check it out: https://www.youtube.com/channel/UCE8fpNEhOoHyf78wGGcgwFg Here is the first video: Please let me know what you think!