A power supply apparatus includes an output unit that wirelessly outputs electric power to an electronic device, a communication unit that wirelessly communicates with the electronic device, a detecting unit that detect a current flowing to the output unit, and a control unit that performs a process to limit the current flowing to the output unit in a case where the current detected by the detecting unit is greater than or equal to a predetermined value set according to a predetermined magnetic field strength while the output unit outputs the electric power to the electronic device.