Net Resistance

Note by Azimuddin Sheikh
2 weeks, 5 days ago

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This one can be solved with a series of wye-to-delta and delta-to-wye transformations. I haven't actually crunched the numbers, but below are the transformations I would use. Note that the color coding is just to show the changes from one step to another. Legs of the same color don't necessarily have the same resistance.

Steven Chase - 2 weeks, 5 days ago

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@Steven Chase sir i got the answer using this delta star one , but it gets complicated after each time we apply . Btw i have a hint which came with the problem , can i post ? then can u try by that method ?

Azimuddin Sheikh - 2 weeks, 5 days ago

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Actually i am not able to catch that hint .

Azimuddin Sheikh - 2 weeks, 5 days ago

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@Azimuddin Sheikh Sure, what is the hint?

Steven Chase - 2 weeks, 5 days ago

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@Steven Chase @Steven Chase sir this was the hint : [img]https://i.postimg.cc/h4sWCmh5/23047a35975b524cd8674eeb5c6aa41b50d0f989-1-690x383.png[/img] i am not getting how they got AB as symmetry line. I cannt think that AB is symmtry line

Azimuddin Sheikh - 2 weeks, 5 days ago

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@Azimuddin Sheikh @Steven Chase sir should i post that image in the actual problem as such i am not getting any option to let it be posted in comment section ? ( As such i have mentioned the link above , can u copy paste it Sir ? U will get the image )

Azimuddin Sheikh - 2 weeks, 3 days ago

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@Azimuddin Sheikh I generally just start a new dummy problem or note, upload a picture to that, paste it into here, and then cancel the dummy problem. It's cumbersome, but it works.

Steven Chase - 2 weeks, 3 days ago

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@Steven Chase @Steven Chase sir this was the hint

Azimuddin Sheikh - 2 weeks, 3 days ago

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@Azimuddin Sheikh I'm not really convinced of the validity of the symmetry approach.

Steven Chase - 2 weeks, 3 days ago

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@Steven Chase sir , how to do this problem as such i am mot getting any symmtry line also not any equipotential points here . ( Maybe there are equipotential points ) Btw answer is suppose to be 2 , Can u try this one ?

Azimuddin Sheikh - 2 weeks, 5 days ago

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