A power reception apparatus comprising: power reception means for receiving power wirelessly supplied from a power transmission apparatus; voltage conversion means arranged to convert the voltage of the power received by the power reception means to a constant voltage with a particular value; determination means arranged to make a determination, as to whether an object which is not a target object to which power is to be transmitted exists in a power transmission service area covered by the power transmission apparatus; characterized in that: the power reception apparatus further comprises: first detection means arranged to detect a magnitude of change in voltage input to the voltage conversion means; second detection means arranged to detect a magnitude of change in consumption power of load means which operates with power supplied by the voltage conversion means; storage means arranged to store information relating to a relationship between a magnitude of change in voltage input to the voltage conversion means and a magnitude of change in consumption power of the load means in a case where there is no object which is not a target object to which power is to be transmitted in a power transmission service area; and the determination means is arranged to determine, in a case where it is determined that the detected consumption power of the load means or the detected voltage input to the voltage conversion means has changed, based on a comparison between the relationship stored in the storage means and a relationship between the magnitude of change in voltage detected by the first detection means and the magnitude of change in consumption power detected by the second detection means, whether the object which is not a target object to which power is to be transmitted exists in the power transmission service area. power reception means for receiving power wirelessly supplied from a power transmission apparatus; voltage conversion means arranged to convert the voltage of the power received by the power reception means to a constant voltage with a particular value; determination means arranged to make a determination, as to whether an object which is not a target object to which power is to be transmitted exists in a power transmission service area covered by the power transmission apparatus; characterized in that: the power reception apparatus further comprises: first detection means arranged to detect a magnitude of change in voltage input to the voltage conversion means; second detection means arranged to detect a magnitude of change in consumption power of load means which operates with power supplied by the voltage conversion means; storage means arranged to store information relating to a relationship between a magnitude of change in voltage input to the voltage conversion means and a magnitude of change in consumption power of the load means in a case where there is no object which is not a target object to which power is to be transmitted in a power transmission service area; and the determination means is arranged to determine, in a case where it is determined that the detected consumption power of the load means or the detected voltage input to the voltage conversion means has changed, based on a comparison between the relationship stored in the storage means and a relationship between the magnitude of change in voltage detected by the first detection means and the magnitude of change in consumption power detected by the second detection means, whether the object which is not a target object to which power is to be transmitted exists in the power transmission service area. first detection means arranged to detect a magnitude of change in voltage input to the voltage conversion means; second detection means arranged to detect a magnitude of change in consumption power of load means which operates with power supplied by the voltage conversion means; storage means arranged to store information relating to a relationship between a magnitude of change in voltage input to the voltage conversion means and a magnitude of change in consumption power of the load means in a case where there is no object which is not a target object to which power is to be transmitted in a power transmission service area; and the determination means is arranged to determine, in a case where it is determined that the detected consumption power of the load means or the detected voltage input to the voltage conversion means has changed, based on a comparison between the relationship stored in the storage means and a relationship between the magnitude of change in voltage detected by the first detection means and the magnitude of change in consumption power detected by the second detection means, whether the object which is not a target object to which power is to be transmitted exists in the power transmission service area.