A battery of emf E and internal resistance r is connected across a resistance R. Resistance R can be adjusted to any value greater than or equal to zero. A graph is plotted between the current passing through the resistance (I) and potential difference (V) across it. Select the correct alternative(s).
A. Internal resistance of the battery is `5 Omega`
B. emf of the battery is 10 V
C. maximum crrent which can be taken form the battery is 2 A
D. V-I graph can never be a stright line as shown in figure.
