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8. A battery of emf E and internal resis...

8. A battery of emf E and internal resistance r is connected across a resistance R. Resistance R can be adjusted to any va greater than or equal to zero. A graph is plotted between the current (i) passing through the resistance and potential differen (V) across it. Select the correct alternative(s). (Volt) ION (ampere) (A) internal resistance of battery is 522 (B) emf of the battery is 20V (C) maximum current which can be taken from the battery is 4A (D) V-i graph can never be a straight line as shown in figure.

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