Current Electricity and Electrical InstrumentHard

Question

A cell of emf E having an internal resistance r is connected to an external resistance R. The potential difference V across the resistance R varies with R as shown in figure by the curve :

Options

A.A
B.B
C.C
D.D

Solution


VR = R =
       R → 0          VR = 0    
&    R → ∞         VR = E    

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