A user apparatus in a mobile communication system including a base station and the user apparatus, including: reception means configured to receive, from the base station, first system information including a first maximum transmission power value and a second maximum transmission power value, and second system information including a first signaling value and a second signaling value; and control means configured, when determining that the second signaling value included in the second system information is a value defined as a transmission condition in a cell where the user apparatus resides, to determine the second maximum transmission power value corresponding to the second signaling value as a maximum transmission power value for use in the cell.