The condition such that the potential difference, VA−VB=0.
A
R1R4=R2R3
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B
R1R3=R2R4
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C
R1R2=R3R4
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D
R1R3=R4R2
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Solution
The correct options are BR1R3=R2R4 CR1R2=R3R4 In a simple setup of Wheatstone bridge as shown below, R1R=R2Rs
There is a simple trick so as to not get confused. Just take the product of resistors across the galvanometer, in an 'x' fashion, and equate. For example in the setup as shown, R1Rs=R2R
So accordingly for this setup, R1R4=R2R3 Which when rearranged, gives R1R3=R2R4 and also R1R2=R3R4