Four identical resistors of 10 Ω each are connected to form a square. The equivalent resistance between two opposite corners is:
Correct answer: A. 10 Ω
- A. 10 Ω
- B. 20 Ω
- C. 5 Ω
- D. 15 Ω
Explanation
For a square of four identical resistors, the equivalent resistance between opposite corners is Req = R. This is because the circuit can be analysed as two parallel branches, each with two resistors in series (2R || 2R = R). Thus, Req = 10 Ω.
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