P 3.2-11 Determine the power received by each of the resistors in the circuit shown in Figure P 3.2-11.

Figure P 3.2-11

To find the power absorbed by each resistor you need to find either the current through the resistor in which case the power is or you find the voltage across the resistor and then the power is

So for the 6 Ω resistor the 0.2 A current source must add to the 0.3 A current source so that the current through the 6 Ω resistor is 0.5 A, so power is

For the 20 Ω resistor is in parallel with the 15 V source, so the power is

For the 8 Ω resistor, since the current in the 6 Ω resistor is 0.5 A going to the right, and there is a 0.5 A current going to the left from the current source. So the current through the 8 Ω resistor must be 1.0 A, so we can find the power from

For the 5 Ω resistor, the 1.0 A current coming from the 8 Ω resistor, must have 0.3 A go to the left since there is the 0.3 A current source there, so the 5 Ω resistor must have 0.7 A going through it, which means the power is

Dr. Donovan's Classes Page	Dr. Donovan's PH 320 Homework Page	PH 320 Homework Chapter 3 Page
Dr. Donovan's Main Web Page	NMU Physics Department Web Page	NMU Main Page

Please send any comments or questions about this page to ddonovan@nmu.edu

This page last updated on January 14, 2019