Two resistances R1 and R2 are connected in parallel, the equivalent resistance Req will be given by the relation

Two resistances R1 and R2 are connected in parallel, the equivalent resistance Req will be given by the relation:

  1. Req = R1 + R2
  2. Req = 1/(R1 + R2)
  3. Req = 1/(1/R1 + 1/R2)
  4. Req = R1/R2

Correct answer: 3. Req = 1/(1/R1 + 1/R2)

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