Past exam of the year 2 of the earth sciences (geology) course of the University of Oxford / 2024 / Paper 3 / 7 / e / Solution

The squared signal equals $1{\mathrm{V}}^2$ except at irrelevant isolated jump times. Its mean-square signal power is thereforeHere “power” has the signal-processing definition specified in the question. To convert this voltage mean square into electrical power in watts, a load electrical resistance would also be required: $P_{\mathrm{electrical}}=⟨g^2⟩/R$.