Engineering Board Exam Reviewer · Series-Parallel Circuits · medium

A 10, resistor is connected in series with two 20, resistors that are in parallel with each other. What is the total resistance?

  1. 20,
  2. 50,
  3. 40,
  4. 15,

Answer

A. 20,

Solution

The parallel pair is 20/2=10, . In series with 10, : RT=10+10=20, .

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