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Four identical cells each having emf E a...

Four identical cells each having emf E and internal resistance r are connected in series to form a loop ABCD as shown in figure . Find potential difference across AB and AC .

Text Solution

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`(V_(A) - V_(B) = ( E )/( 2) , V_(A) - V_(C ) = - E )`
`I = (E_(eq))/(r_(eq))`
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