The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other ?
Correct answer: B. 36 Q
- A. 18 Q
- B. 36 Q
- C. 48 Q
- D. 64 Q
Explanation
For two parallel resistors, 1/12=1/18+1/R. Hence 1/R=1/36 and the other branch resistance is 36 ohms.
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