How do you analyze a circuit with resistors in series and parallel configurations? With the Break It Down-Build It Up Method!

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0:00 INTRO: In this video we solve a combination series and parallel resistive circuit problem for the voltage across, current through and power dissipated by the circuit’s resistors.

1:32 BREAK IT DOWN: We redraw the circuit in linear form to more easily identify series and parallel relationships. Then we combine resistors using equivalent resistance equations. After redrawing several times we end up with a single resistor representing the equivalent resistance of the circuit. We then apply Ohm’s Law to this simple (or rather simplified) circuit and determine the circuit current (I-0 in the video).

7:36 BUILD IT UP: Retracing our redraws, we determine the voltage across and current through each resistor in the circuit using Ohm’s Law.

12:51 POWER: After tabulating our solutions we determine the power dissipated by each resistor.