According to one embodiment, a fuel cell includes a fuel tank that stores a liquid fuel, a power generation section including an anode and a cathode, a first fuel supply section that supplies the liquid fuel from the fuel tank to the anode, an oxygen supply section that supplies oxygen to the cathode, and a second fuel supply section that supplies the liquid fuel from the fuel tank to the cathode. The power generation section generates power by a chemical reaction of the liquid fuel and the oxygen.