Engineering Board Exam Reviewer · Circuit Theorems and Conversions · hard

For the circuit shown, V=20 V, R1=6, , R2=2, , and R3=12, . Find the Thevenin resistance RTh at terminals a-b.

  1. 1.5,
  2. 20,
  3. 1.33,
  4. 13.5,

Answer

D. 13.5,

Solution

With the source shorted, R1 R2=1.5, is in series with R3: RTh=R3+R1 R2=12, +1.5, =13.5, .

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