Current `i` is being driven through a cell of emf `epsilon` and internal resistance3 `r`, as shown

(i) the cell absorbs energy at rate of `epsilon i`
(ii) The cell stores chemical energy at the rate of `(epsilon i - i^(2)r)`
(iii) The potential differnece across the cell is `epsilon+ir`
(iv) some heat is produced in the cell

Options

A. (i) , (ii)
B. (ii), (iii)
C. (i),(iii),(iv)
D. all

Answer

D