Physics-
General
Easy

Question

Each resistance shown in figure is 2blank capital omega. The equivalent resistance between A and B is

  1. 2blank capital omega    
  2. 4blank capital omega    
  3. 8blank capital omega    
  4. 1blank capital omega    

The correct answer is: 2blank capital omega


    Given circuit is a balanced Wheatstone bridge. So, diagonal resistance of 2capital omega will be ineffective.

    Equivalent resistance of upper arms
    =2+2=4capital omega
    Equivalent resistance of lower arms
    =2+2=4capital omega
    R subscript A B end subscript equals fraction numerator 4 cross times 4 over denominator 4 plus 4 end fraction equals 2 capital omega

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