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In the circuit shown, each cell has as emf of 5 volt and internal resistance 1Ω. Then potential difference between B and A is 

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By Expert Faculty of Sri Chaitanya
a
12.5 volt
b
7.5 volt
c
10.5 volt
d
2.5 volt

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detailed solution

Correct option is B

Effective emf of the circuit EC=(3×5-5) volt=10 volt ∴i=current in the circuit =104×1A=2.5A ∴VA-VB=(5+1×2.5) volt=7.5 volt.
ctaimg

ctaimg

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