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BITSAT 2011
Exam
BITSAT
Year
2011
Subject
Physics
Chapter
Current Electricity

BITSAT 2011 · Physics · Current Electricity

Calculate the effective resistance between A and B in following...

Calculate the effective resistance between A and B in following network. Calculate the effective resistance between A and B in following network.

Options

  1. A5Ω5 \Omega
  2. B10Ω10 \Omega
  3. C20Ω20 \Omega
  4. D30Ω30 \Omega

Correct answer

C. 20Ω20 \Omega

Step-by-step solution

Equivalent resistance =(5+10+15)∥(10+20+30) So, Req =30×6030+60=20Ω\begin{array}{l} =(5+10+15) \|(10+20+30) \\ \text{ So, }R_{\text{eq }}=\frac{30 \times 60}{30+60}=20 \Omega \end{array}
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