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Current Electricity question

2018 · Q119
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Current Electricity question

2018 · Q119

NEETPhysicsCurrent ElectricityMCQ+4 / −1
A battery consists of a variable number n of identical cells (having internal resistance 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?
  1. A
    NEET 2018 Physics - Current Electricity Question 37 English Option 1
  2. B
    NEET 2018 Physics - Current Electricity Question 37 English Option 2
  3. C
    NEET 2018 Physics - Current Electricity Question 37 English Option 3
  4. D
    NEET 2018 Physics - Current Electricity Question 37 English Option 4
View written solutionFree

Correct answer: A

Current drawn from the cell is

I = nεnr=εr{{n\varepsilon } \over {nr}} = {\varepsilon \over r}nrnε​=rε​

NEET 2018 Physics - Current Electricity Question 37 English Explanation


So, I is independent of n and I is constant.

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