# A variable resistor R is connected across a cell of emf  E and internal resistance r as shown in the figure. Draw a plot showing the variation of  (i) terminal voltage V and (ii) the current I, as a function of R​

Dear Student,

The formula of terminal voltage is $V=\frac{\epsilon R}{R+r}$ and the graph is shown bellow.

The current I is given by $I=\frac{\epsilon }{R+r}$, and the graph is