Question

The potential difference between points $A$ and $B$ of adjoining figure is

• A. $\frac{2}{3}V$
• B. $\frac{8}{9}V$
• C. $\frac{4}{3}V$
• D. $2V$

Answer 1

Answer: (C)

$\frac{4}{3}V$

Answer 2

The given circuit can be redrawn as follows

For identical resistances, potential difference distributes equally among all. Hence potential difference across each resistance is $\frac{2}{3}V,$ and potential difference between A and B is $\frac{4}{3}V.$