Voltage, Current, Resistance, Power, Capacitance, and Inductance are some basic quantities studied in Electrical Engineering. Besides these Resistivity, Magnetic field, flux precedes the list. Time, area and volume are not directly linked to electricity and are treated as general variables.
The list below displays 20 Basic quantities, their units, and symbols as well:
You can learn more about Electrical Units and schematics in this video by Colorado University: