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Home  >>  JEEMAIN and NEET  >>  Physics  >>  Class12  >>  Current Electricity

Find the resistance of the wire frame shaped as a cube when measured between the points 1 and 2. The resistance of each edge is R

 

$\begin {array} {1 1} (A)\;\large\frac{R}{7} & \quad (B)\;\large\frac{11R}{12} \\ (C)\;\large\frac{7R}{12} & \quad (D)\;\large\frac{4R}{9} \end {array}$

 

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1 Answer

The potential diagram after identifying the equipotential points is as follows.
Here, each connections represent a resistance of R
The equivalent resistance on simplifying comes out to be $ \large\frac{7R}{12}$
Ans : (C)
answered Feb 8, 2014 by thanvigandhi_1
edited Mar 14, 2014 by thanvigandhi_1
 

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