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Q. What is the equivalent resistance between A and B in given figure?Physics Question Image

AIIMSAIIMS 2015Current Electricity

Solution:

Given circuit is a balanced Wheatstone bridge. So circuit becomes
Equivalent resistance,
$R=\frac{\left(50+50\right)\times\left(50+50\right)}{\left(50+50\right)+\left(50+50\right)}=\frac{100\times100}{200}=50 \Omega$

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