Engineering Board Exam Reviewer · Parallel Circuits · hard

Two resistors R1 and R2 are connected in parallel with R1=3R2. The equivalent resistance is 6, . Find R2.

  1. 6,
  2. 12,
  3. 8,
  4. 24,

Answer

C. 8,

Solution

1/6=1/3R2+1/R2=4/3R2 R2=4·6/3=8, (and R1=24, ).

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