Q. A straight line plot showing the terminal potential difference (V) of a cell as a function of current (I) drawn from it, is shown in figure. The internal resistance of the cell would be then
![](https://www.schoollearners.com/wp-content/uploads/2021/10/Q36.jpg)
(i) 2.8 ohms
(ii) 1.4 ohms
(iii) 1.2 ohms
(iv) zero
Answer: (i) 2.8 ohms
I = 0, V = E, ∴E = 5.6 V
r=E/I= 5.6/2.0 = 2.8 ohms