65. ssm Determine the equivalent resistance between the points A and B for the group of resistors in the drawing.

So start as far away from AB as you can and you have the 4 Ω in series with the 6 Ω

Now redraw circuit

At this point we have the 9 Ω, the 8 Ω, and the 10 Ω are all in parallel so we can find the effective resistance of these three.

So redrawing circuit yields

The 3 Ω and the 2.975 Ω are in series so we can replace them with the effective resistance

And our last circuit is

So we have the 20 Ω resistor in parallel with the 5.975 Ω resistor and so the total resistance between A and B is found from

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This page last updated on June 18, 2018