Engineering Board Exam Reviewer · Circuit Theorems and Conversions · hard

Three 30, resistors are connected as a delta (triangle). What is the resistance between any two corners?

  1. 10,
  2. 60,
  3. 90,
  4. 20,

Answer

D. 20,

Solution

Between two corners, one resistor (30, ) is in parallel with the other two in series (60, ): (30)(60)/30+60=20, .

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