MCQ
The potential difference in open circuit for a cell is $2.2 \mathrm{volts}$. When a $4 \mathrm{ohm}$ resistor is connected between its two electrodes the potential difference becomes 2 volts. The internal resistance of the cell will be
- A$1 \mathrm{ohm}$
- ✓$0.2 \mathrm{ohm}$
- C$2.5 \mathrm{ohm}$
- D$0.4 \mathrm{ohm}$