Physics-
General
Easy

Question

In a typical Wheatstone network, the resistances in cyclic order are A = 10 capital omega, B = 5 capital omega, C = 4 capital omega and D = 4 capital omega for the bridge to be balanced

A ´ left parenthesis 5 capital omega right parenthesis is obtained by connecting a 10 capital omega resistance in parallel with A.

  1. 10 capital omega should be connected in parallel with A    
  2. 10 capital omega should be connected in series with A    
  3. 5 capital omega should be connected in series with B    
  4. 5 capital omega should be connected in parallel with B    

The correct answer is: 10 capital omega should be connected in parallel with A


    For a balance Wheatstone bridge.
    fraction numerator A over denominator B end fraction equals fraction numerator D over denominator C end fraction rightwards double arrow fraction numerator 10 over denominator 5 end fraction not equal to fraction numerator 4 over denominator 4 end fraction blank left parenthesis text Unbalanced end text right parenthesis
    fraction numerator A ´ over denominator B end fraction equals fraction numerator D over denominator C end fraction rightwards double arrow fraction numerator A ´ over denominator 5 end fraction equals fraction numerator 4 over denominator 4 end fraction rightwards double arrow A ´ equals 5 capital omega

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