primary and secondary cells

What is an electric cell ? What is a primary and a secondary cell ?

A primary and a secondary cell have the same EMF which of these will provided higher value of the maximum currentthat can be drawn? Explain briefly.

The primary and secondary coils of a transformer do not have any electrical contact. How is then electrical energy transferred from primary to secondary ?

The number of turns in primary and secondary coils of a transformer is 50 and 200, respectively. If the current in the primary coil is 4 A, then current in the secondary coil is

In a stepup transformer, the ratio of number of turns in primary and secondary coils is 1 : 10 . What voltage will develop in the secondary if the primary is connected to 220 V mains ? If the current drawn from the secondary is 2A, calculate the current through the primary

Who are primary and secondary consumers?