Question

Calculate the net resistance of the circuit between $A$ and $B$ :

• A. $\frac{8}{3} \Omega $
• B. $\frac{14}{3} \Omega $
• C. $\frac{16}{3} \Omega $
• D. $\frac{22}{3} \Omega $

Answer 1

Answer: (B)

This is a balanced Wheatstone's bridge so no current flows through the $7\, \Omega $ resistor.
$\therefore \frac{1}{R_{eq}}=\frac{1}{4+3}+\frac{1}{6+8}$ or $R_{eq}=\frac{14}{3}\, \Omega$