Some of the batteries are rechargeable :
I : Dry cell battery
II : Lead-storage (acid) battery
III : Nickel-cadmium battery
IV : Lithium battery
V : Fuel cell
Select correct alternates :
Three different circuits (I, II and III) are constructed using identical batteries and resistors of R and 2R ohm.
What can be said about current I in arm AB of each circuit?