Match.com

Three circuits are shown below. In each case, identify which of the displayed circuits in the blue boxes is/are electrically equivalent. In none are equivalent select "None".

Note that we are using a short-hand notation here, where nodes are labeled with voltages. You can think about this as a short-hand for having a voltage source with that value between that node and ground.

Also Note: R_1||R_2|| \ldots || R_n = \lgroup \frac{1}{R_1}+\frac{1}{R_2}+\ldots\frac{1}{R_n} \rgroup ^{-1}

Circuit 1

-- A B C D None

Circuit 2

-- A B C D E None

Circuit 3

-- A B C D None