Question

The effective resistance between the points $X$ and $Y$ in the given circuit is

• A. $8/3\Omega$
• B. $8\Omega$
• C. $4\Omega$
• D. $2\Omega$

Answer 1

The correct option is A $8/3\Omega$

The given circuit is redrawn as
The equivalent resistance between $X$ and $Y$ is
$\frac{1}{R_{XY}}=\frac{1}{8}+\frac{1}{4}=\frac{1+2}{8}=\frac{3}{8}$
$\therefore R_{XY}=\frac{8}{3}\Omega$.