Question

The internal resistance of a cell of emf 2V is $0.1\Omega$. It’s connected to a resistance of $3.9\Omega$. The voltage across the cell will be

• A. 0.5 volt
• B. 1.9 volt
• C. 1.95 volt
• D. 2 volt

Answer 1

The correct option is C 1.95 volt

By using $r=(\frac{E}{V}-1)R\Rightarrow 0.1=(\frac{2}{V}-1)\times 3.9\Rightarrow V=1.95$ volt