When a battery connected across a resistor of \( 16 \Omega \), the voltage across the resistor i...

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When a battery connected across a resistor of \( 16 \Omega \), the voltage across the resistor is \( 12 \mathrm{~V} \).When the same battery is connected across a resistor of \( 10 \Omega \), voltage across it is \( 11 \mathrm{~V} \). The internal resistance of the battery in ohms is
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