A cell of emf `epsilon` and internal resistance `r` drives a current `i` through an extermal resistance `R`
(i) The cell suppllied `epsilon i` power
(ii) Heat is produced in `R` at the rate `epsilon i`
(iii) Heat is produced in `R` at the rate `epsilon I ((R )/(R+r))`
(iv) Heat is produced in the cell at the rate `epsilon i((r ?/(R+r))`

Options

A. The cell suplies `varepsiloni` power
B. Hear is produced in `R` at the rate `varepsilon`
C. Heat is produced in `R` at the rate `varepsiloni(R/(R+r))`
D. Heat is produced in the cell at the rate `varepsiloni (r/(R+r))`

Answer

A, C, D