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NEET2012PhysicsCurrent ElectricityActual

A cell having an emf and internal resistance r is connected across a variable external resistance R . As the resistance R is increased, the plot of potential difference V across R is given by

Correct answer

2

Step-by-step solution

Here, E=I(R+r) E=I R+I r and aligned & E=V+I r & E=V+ E r R+r & V=E- E R+r r & y=c- 1 x aligned This equation represents option (3).

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