Electronics - Voltage and Current - Discussion

A fuel cell is an electrochemical device that contains two electrodes (an anode and cathode) and an electrolyte; it uses a chemical reaction to produce electricity much like a battery. However, unlike a battery, a fuel cell never "goes dead" and never needs recharging. It will continue to produce power as long as it has a constant supply of fuel and oxygen.

In battery reduction and oxidation takes place at anode and cathode. Then why the ans is not (b).

Fuel cells and batteries are similar because they use a chemical reaction to provide electricity. A battery stores the chemical reactants, usually metal compounds like lithium, zinc or manganese. Once used up, you must recharge or throw away the battery. A fuel cell actually creates electricity through reactants (hydrogen and oxygen) stored externally. The fuel cell will produce electricity as long as it has a fuel supply. In short, a fuel cell vehicle is refueled instead of recharged.

Fuel cell takes hydrogen and oxygen on anode and cathode respectively and convert this chemical energy into electrical energy.

Fuel cell means Electrical Generator where Diesel is used to run the generator.

Can you say me about fuel cell?

In battery, mass may not be transfer (closed system) but in fuel cell, mass flow in and out of the system, mean open system.