what is the unit abbreviation for amps
These are (together with the letter symbols used as abbreviations): 1  Volts(V) - A measure of the potential difference, emf (electromotive force), or voltage in a circuit. 2  Amps(A) - A measure of the current flowing in a circuit. 3  Watts(W) - A measure of the power developed by hte flow of current through a circuit.