Two identical cells each series |MODERN PHYSICSJEEMain2023

JEE MAIN 2023

11-4-2023

Question

Two identical cells each of emf 1.5 V are connected in series across a $10 \Omega$ resistance. An ideal voltmeter connected across $10 \Omega$ resistance reads 1.5 V . the internal resistance of each cell is $\_\_\_\_$ $\Omega$.

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Solution

$\begin{aligned} & \text { Sol. } \quad \begin{aligned} V & =I \times 10 \\ 1.5 & =\left(\frac{3}{10+2 r}\right) \times 10 \\ r & =5 \Omega .\end{aligned} \\ & \\ & \end{aligned}$

Question Tags

JEE Main

Chemistry

Easy

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