Question

Respected Sir/Mam,I am student under class 12th science stream and want description about electrochemical cell.

Answer 1

An electrochemical cell is a device that converts chemical energy into
electrical energy when a chemical reaction is occurring in a cell.
The
current is caused by the reactions releasing and accepting electrons at the
different ends of a conductor. In a spontaneous chemical reaction electrons are
passed directly from one element to another. In an electrochemical cell these
simultaneous redox reactions are "spatially separated" - i.e. happen at
different places. The resultant ions then combine to form a new product. During
this process electrons are conducted from the anode to the cathode through an
outside electrical current which can be used.