What is the total resistance in the following circuit element?
- A. R/2
- B. 3R
- C. 3R/2
- D. 2R/3 ✓
Correct Answer: D. 2R/3
Explanation
Based on the standard layout depicted in such exam questions, two resistors of resistance R are in series (R + R = 2R), and this combination is in parallel with a third resistor of resistance R. The equivalent resistance is (2R \times R) / (2R + R) = 2R/3.
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