If two electrical resistors with resistances R1 and R2 are
Chapter 7, Problem 7.1.525(choose chapter or problem)
If two electrical resistors with resistances R1 and R2 are connected in parallel (see the figure), then the total resistance in the circuit is given by the complex rational expression 1 1 R1 1 R2 . Simplify the expression. Then find the total resistance if R1 10 ohms and R2 20 ohms. 1 2
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