In many technical arenas, standard units are named for pioneers in that field. In electricity:
The volt, the unit for electric potential, is named for Italian physicist Alessandro Volta.
The watt, the unit for mechanical and electrical power, is named for Scottish engineer James Watt.
The amp or ampere, the unit for electric current, is named for French physicist André-Marie Ampère.
The ohm, the unit for electric resistance (and impedance), is named for German physicist Georg Simon Ohm.
The hertz, the unit for frequency (of one cycle per second), is named for German physicist Heinrich Hertz.
The siemens, the unit for electrical conductance, is named for either German engineer / inventor William Siemens, or his brother Werner von Siemens.
The coloumb, the unit for electric charge, is named for French military engineer Charles-Augustin de Coulomb.