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Question

what is the relationship between emf terminal voltage and internal resistance full explanation

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Solution

Answer let V is the source voltage ,E is emf as we know emf is having some internal resistance r suppose an external resistance R is connected in series with emf battery therefore the equation is given as V=E +I(r+R)I(r+R)=V-Er+R=V-EIr=V-EI-Rfrom above equation the emf E increase the internal resistance decreases

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