Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Current Electricity
0 votes

Calculate the effective resistance between points A and B


$\begin {array} {1 1} (A)\;5\Omega & \quad (B)\;10\Omega \\ (C)\;15\Omega & \quad (D)\;20\Omega \end {array}$


Can you answer this question?

1 Answer

0 votes
The ratio of upper resistances and lower resistances are same.  i.e. $5 : 10 : 15 = 10 : 20 : 30.$
Hence, the resistances in the middle are not useful (balanced wheatstone bridge).So effectively the given circuit becomes eqivalent to 30 ohm resistor in parallel with 60 ohm resistor. which reduces to 20 ohms
Ans : (D)


answered Feb 14, 2014 by thanvigandhi_1
edited Sep 4, 2014 by thagee.vedartham

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App