Problem: What is the equivalent resistance between points a and b in the figure?

FREE Expert Solution

Resistors in parallel:

Req=R1R2R1+R2

Resistors in series:

Req=R1+R2

30Ω and 45Ω resistors are in parallel:

Req = (30)(45)/30+45 = 18Ω

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What is the equivalent resistance between points a and b in the figure?