High School VIR Chart for Circuit Analysis: A Quicker & Intuitive Alternative to Loop Rule

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The VIR chart is presented as a quicker and more intuitive alternative to the Loop Rule for circuit analysis, particularly useful for AP Physics C exam preparation. It simplifies circuit problems by first calculating resistances using parallel and series formulas. However, there are concerns about its applicability to more complex circuits, such as those with two batteries or RC/RL circuits. While it offers a shortcut, it may not fully replace the traditional methods involving Kirchhoff's Laws. Overall, the VIR chart can enhance understanding and efficiency in basic circuit analysis.
stephen8686
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Hello guys,
I'm reviewing for the AP physics C exam and in one of my review books I came across this trick called a VIR chart for circuit analysis. It's a sort of weird alternative to the usual Loop Rule. If you haven't heard of it before here it is: https://jacobsphysics.blogspot.com/2009/03/i-got-email-from-geoff-clarion-other.html?m=1

I found this to be much quicker and more intuitive than the loop rule usually is but I'm not sure how it could be done with a two-battery circuit. I suppose it can't be used with rc or rl circuits either?
 
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The idea seems to be to simplify the problem by first calculating resistances within the circuit using the parallel and series formulae. That's not different from using the two Kirchhoff Laws, it's sometimes just a short cut.
 

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