Charging Of Battery And Discharging Of Battery MCQ - Practice Questions with Answers

Emf of a cell when the cell is charging and discharging and Open circuit and Short circuit

Open circuit t:

- no current is taken from the cell. $i=0$
- The potential difference between A and $\mathrm{B} V_{A B}=E$
- The potential difference between C and $\mathrm{D} V_{C D}=0$

Short circuit

• Two terminals of a cell are joined together by a thick conducting wire

• - Maximum current $i=\frac{E}{r}$
  - $V=0$

  Equation of cell
  1. When supplying the current: $E=V+i R$
  2. When the cell is being charged: $E=V-i R$