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A battery consists of a variable number ...

A battery consists of a variable number n of identical cells (having internal resistances r each) which are connected in series.The terminals of the battery are short-circuited and the current I is measured. Which of the graphs shows the correct relationship between I and n?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
Current in the circuit containing n identical cells connected in series,
`I=(n e)/(nr)` [e=emf of each identical cell]
or, `I=e/r`
So, I remains the same with any charge of n.
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