Engineering Board Exam Reviewer · Parallel Circuits · medium

Three 30, resistors are connected in parallel. What is the equivalent resistance?

  1. 10,
  2. 90,
  3. 30,
  4. 3,

Answer

A. 10,

Solution

For n equal resistors in parallel, Req=R/n=30/3=10, .

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  1. Two resistors are connected in parallel. One is 12, and the equivalent resistance is 4, . What is the other resistor?
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