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To verify Ohm’s law, a student connects the voltmeter across the battery as, shown in the figure. The measured voltage is plotted as a function of the current, and the following graph is obtained.
If $V_{0}$ is almost zero, identify the correct statement.

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The potential difference across the battery is 1.5V when it sends a current of 1000 mA

The value of the resistance R is 1.5 $Ω$

The emf of the battery is 1.5 V and its internal resistance is 1.5 $Ω$

The emf of the battery is 1.5 V and the value of R is 1.5 $Ω$

answer is D.

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Detailed Solution

$V = E - I R$

$When, I = O, V = E = 1.5 V$

$I = 1000 mA, V = 0$

$∴ 1.5 - 1 \times r = 0 \Rightarrow r = 1.5 Ω$

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