Question

Calculate the effective resistance between the points A and B for following circuit

• A. $\frac{3}{5}$ $\Omega$
• B. $\frac{1}{3}$ $\Omega$
• C. $\frac{2}{3}$ $\Omega$
• D. $\frac{3}{2}$ $\Omega$

Answer 1

The correct option is A $\frac{3}{5}$ $\Omega$

Dotted $14\Omega$ resistors are in parallel, so equivalent circuit becomes,

$(\frac{1}{2},1)\Omega$ resistors are in series so equivalent circuit becomes,

Now $(1,\frac{3}{2}\Omega )$ are in parallel

Net resistance $=\frac{1\times \frac{3}{2}}{\frac{3}{2}+1}=\frac{\frac{3}{2}}{\frac{5}{2}}=\frac{3}{5}\Omega$