Question

The effective resistance between A and B is $3\Omega$ Then the value of R is

• A. $2\Omega$
• B. $4\Omega$
• C. $6\Omega$
• D. $8\Omega$

Answer 1

The correct option is A $2\Omega$

Equivalent resistance between $A$ and $B$ is:-

$\frac{6R}{6+R}=3$

or $6R=18+3R$

$9R=18$

$R=\frac{18}{9}=2\Omega$