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A battery of emf E and internal resistan...

A battery of emf E and internal resistance r is connected across a resistance R. Resistance R can be adjusted to any value greater then or equla to zero. A graph is plotted between the current passing through the resistance (I) and potential (V) across it. Select the correct alternatives.

A

internal resistance of battery is `5 Omega`

B

emf of the battery is `20 V`

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.

Text Solution

Verified by Experts

The correct Answer is:
A
`V=-5I+10=10-5I`
`I_(max)=2` Amp
`E=10 V`
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