(b) the symbol for
a cell, + referring to P and
– referring to the N
electrode Electrical
connections to the cell are
made at P and N Rationalised 2023-24
Current
Electricity
95
I  R   =  e – I  r
Or, I
R
r
=
ε+
(3 40)
The maximum current that can be drawn from a cell is for R = 0 and
it is Imax = e/r