I want to calculate the total resistance between the 2 points: A, B.

I've tried using the Delta-Wye method, but I'm not sure how to apply it to my problem since there's 6 resistors and not 3 (usually seen in tutorials).


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    \$\begingroup\$ If you did a Wye-Delta transform on just R2, R4, R6 - what would that give you? \$\endgroup\$ – brhans Dec 13 '18 at 18:44
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    \$\begingroup\$ Do it step by step. Note that R5 is parallel to the rest of the network. Then reduce the problem tho that rest of the network. Note, that it would be symmetrical. \$\endgroup\$ – Eugene Sh. Dec 13 '18 at 18:45
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    \$\begingroup\$ Note: All resistors having equal value lets you do another important simplification. \$\endgroup\$ – The Photon Dec 13 '18 at 18:45
  • \$\begingroup\$ brhans: Transforming Wye -> Delta for R2, R4, R6 would give me R1, R3, R5. Right? If I'm right, do the resistance values change from 3K to something else or do they stay the same? \$\endgroup\$ – alcatraz Dec 13 '18 at 19:10
  • \$\begingroup\$ Buy few resistors and measure \$\endgroup\$ – Gregory Kornblum Dec 13 '18 at 19:11

enter image description here

Here's a clue - what can you say about Vx and Vy?

  • \$\begingroup\$ Vy is the center of Wye, Vx is the top of Delta? I'm not really sure since I've solved only basic resistor networks so far. Would transforming Wye to Delta and then solving Delta for R = 3000 be right (3 resistors in total instead of 6)? \$\endgroup\$ – alcatraz Dec 13 '18 at 20:39
  • \$\begingroup\$ Imagine looking at that network from the left looking at node A. Rotate what you see until R2 is horizontal then ask whether there are in fact two centres to two different wyes. \$\endgroup\$ – Andy aka Dec 13 '18 at 20:45
  • \$\begingroup\$ I'm still not sure - do appreciate your clues though. \$\endgroup\$ – alcatraz Dec 13 '18 at 23:43
  • \$\begingroup\$ Remove R5 and redraw the circuit as a bridge with R2 as the middle joining element. If you don’t understand, try googling Wheatstone bridges and, remember, all resistors are the same value. \$\endgroup\$ – Andy aka Dec 14 '18 at 0:17

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