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NEET2009PhysicsCurrent ElectricityActual

A student measures the terminal potential difference (V) of a cell (of emf and internal resistance r ) as a function of the current (I) flowing through it. The slope and intercept of the graph between V and I , then respectively, equal

Options

  1. Aand -r
  2. B- r and
  3. Cr and -
  4. D- and r

Correct answer

B. - r and

Step-by-step solution

According to Ohm's law dV dI =- r and V= if I=0 [As V + Ir = ] Slope of the graph =-r and intercept =

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