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A battery of ...

Question

A battery of emf $10 V$ and internal resistance $3 W$ is connected to a resister. If the current in the resister is $0.5 A,$ what is the resistance of the resister? What is the terminal voltage of the battery when the circuit is:

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Solution

$\begin{matrix} E = V + I R \frac{E}{I} - V = 17 Ω A g a i n, E = V + I Q V = 10 - 0.5 \times 3 = 8.5 V \end{matrix}$

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