An electric pump (100) includes: a motor (1) that drives a pump (2); and a control unit (4) to which an input signal for driving the motor is input from an external device, which outputs a drive signal based on the input signal, and which outputs a pulse signal indicating a rotation state of the motor to the external device, in which the control unit is configured to change both of a frequency anda duty ratio of the pulse signal so as to be capable of discriminating whether the motor is in a drive state or a stop state and between a plurality of states of the motor in the stop state.