Uploaded November 2021 | Updated September 2026, 3 weeks ago
This video provides a method for systematically analyzing a DC circuit to determine the voltages across, currents through, and power dissipated by all of the resistors in the circuit. The circuit used is relatively simple with two sets of parallel resistors connected in series with each other, but the steps used can be applied to any circuit with series and parallel resistors.
The steps are outlined below along with timestamps for where they are implemented.
00:00 - Introduction
00:54 - Step 1. Identify a set of resistors that are in series or parallel
01:08 - Step 2. Determine the equivalent resistance of that set of resistors
01:38 - Step 3. Redraw the circuit with the equivalent resistance
02:15 - Step 4. Repeat steps 1-3 until the circuit is reduced to one equivalent resistance.
03:36 - Step 5. Calculate the source current
04:26 - Step 6. Go back to previous circuit reduction step and fill in the known currents and voltages for the equivalent resistance
05:06 - Step 7. Calculate the unknown currents or voltages for the equivalent resistance using the info from step 6
05:49 - Step 8. Repeat steps 6 and 7 until all voltages and currents are calculated
08:23 - Calculate power
09:34 - Double check my calculations
Song Credit:
Music from Uppbeat (free for Creators!):
uppbeat.io/t/mountaineer/voyager
License code: YNTAUKIPESG5XXKJ
This video provides a method for systematically analyzing a DC circuit to determine the voltages across, currents through, and power dissipated by all of the resistors in the circuit. The circuit used is relatively simple with two sets of parallel resistors connected in series with each other, but the steps used can be applied to any circuit with series and parallel resistors.
The steps are outlined below along with timestamps for where they are implemented.
00:00 - Introduction
00:54 - Step 1. Identify a set of resistors that are in series or parallel
01:08 - Step 2. Determine the equivalent resistance of that set of resistors
01:38 - Step 3. Redraw the circuit with the equivalent resistance
02:15 - Step 4. Repeat steps 1-3 until the circuit is reduced to one equivalent resistance.
03:36 - Step 5. Calculate the source current
04:26 - Step 6. Go back to previous circuit reduction step and fill in the known currents and voltages for the equivalent resistance
05:06 - Step 7. Calculate the unknown currents or voltages for the equivalent resistance using the info from step 6
05:49 - Step 8. Repeat steps 6 and 7 until all voltages and currents are calculated
08:23 - Calculate power
09:34 - Double check my calculations
Song Credit:
Music from Uppbeat (free for Creators!):
uppbeat.io/t/mountaineer/voyager
License code: YNTAUKIPESG5XXKJ
