Question

A circuit is made using $R_1, R_2, R_3, R_4$ and a battery as shown in the following figure. Find the equivalent resistance of the given circuit and the current passing through $R_3$

• A. $3 \ \Omega, \frac{1}{3} \text{ A}$
• B. $\frac{1}{3} \ \Omega, 27 \text{ A}$
• C. $\frac{2}{3} \ \Omega, \frac{21}{2} \text{ A}$
• D. $\frac{1}{3} \ \Omega, \frac{21}{2} \text{ A}$
• E. $\frac{2}{3} \ \Omega, \frac{21}{3} \text{ A}$

Hint:

For complex bridge circuits, check if the bridge is balanced ($R_1/R_2 = R_4/R_3$). If it isn't, use Delta-Wye transformations or Kirchhoff's Loop Rule to find the branch currents.

Answer 1

The Correct Option is C