The combination of two identical cells, whether connected in series or parallel combination provides the same current through an external resistance of $2 Ω .$ The value of internal resistance of each cell is

Option 1 - 2 <math> <mrow> <mi>Ω</mi> </mrow> </math>

Option 2 - 4 <math> <mrow> <mi>Ω</mi> </mrow> </math>

Option 3 - 6 <math> <mrow> <mi>Ω</mi> </mrow> </math>

Option 4 - 8 <math> <mrow> <mi>Ω</mi> </mrow> </math>

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Vishal Baghel | Contributor-Level 10

4 months ago

Correct Option - 1

Detailed Solution:

According to question, we can write

$\frac{2 V}{2 + 2 r} = \frac{V}{2 + \frac{r}{2}}$

$\Rightarrow 2 + 2 r = 4 + r \Rightarrow r = 2 Ω$

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The combination of two identical cells, whether connected in series or parallel combination provides the same current through an external resistance of 2 Ω . The value of internal resistance of each cell is

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