Equivalent resistance for resistors in series:
Equivalent resistor for resistors in parallel:
60Ω and 40Ω are in parallel.
1/Req1 = 1/60 + 1/40 = 1/24
Req = 24Ω
60Ω, 60Ω, and 45Ω resistors are in parallel:
1/Req2 = 1/60 + 1/60 + 1/45 = 1/18
Suppose that R = 70 Ω.
What is the equivalent resistance between the points a and b in Figure 1? Express your answer with the appropriate units.
Rab = ____
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