Question

Find the current \( i \) in the given circuit.

• A. \( \frac{\varepsilon}{R} \)
• B. \( \frac{2\varepsilon}{R} \)
• C. \( \frac{\varepsilon}{2R} \)
• D. \( \frac{-2\varepsilon}{R} \)

Hint:

Symmetrical circuits often reduce to series or parallel combinations—look for patterns.

Answer 1

The Correct Option is A

Analyze symmetry. Let’s simplify using symmetry and equivalent resistance approach. After simplification, the effective resistance is \( R_{\text{eq}} = R \).
Thus, \( i = \frac{\varepsilon}{R} \).