Question

What is the equivalent resistance between A and B in given figure?

• A. 50 $\Omega$
• B. 25 $\Omega$
• C. 75 $\Omega$
• D. 100 $\Omega$

Answer 1

Answer: (A)

Given circuit is a balanced Wheatstone bridge. So circuit becomes
Equivalent resistance,
$R=\frac{\left(50+50\right)\times \left(50+50\right)}{\left(50+50\right)+\left(50+50\right)}=\frac{100\times 100}{200}=50\Omega$