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AIIMS 2015
Exam
AIIMS
Year
2015
Subject
Physics
Chapter
Current Electricity

AIIMS 2015 · Physics · Current Electricity

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

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

Options

  1. A50Ω50 \Omega
  2. B25Ω25 \Omega
  3. C75Ω75 \Omega
  4. D100Ω100 \Omega

Correct answer

A. 50Ω50 \Omega

Step-by-step solution

Given circuit is a balanced Wheatstone bridge. So circuit becomes What is the equivalent resistance between A and B in given figure?
Equivalent resistance, R=(50+50)×(50+50)(50+50)+(50+50)=100×100200=\frac{(50+50) \times(50+50)}{(50+50)+(50+50)}=\frac{100 \times 100}{200}=50 \Omega
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