Estimate the network resistance, Electrical Engineering

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When three resistors R1, R2 and R3 are connected in parallel as shown in the diagram.

1813_Estimate the network resistance.png

For these resistors the equivalent resistance is given by:

2148_Estimate the network resistance1.png

a. Derive a rule to estimate the network resistance when one of the resistors has a much smaller resistance than the other two.

b. Derive a rule to estimate the network resistance when two of the resistors have much smaller values.


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