Question

If each resistance in the network shown in the figure is $10\Omega$. The resistance between A and B is:

• A. $10$ $\Omega$
• B. $20$ $\Omega$
• C. $40$ $\Omega$
• D. $5$ $\Omega$

Answer 1

Answer: (A)

$10$ $\Omega$

As $\frac{R_1}{R_2}=\frac{R_3}{R_4}$
Hence it is a circuit of Wheatstone bridge
$R_{AB}=\frac{20\times 20}{2\times 20}=10\Omega$