What letter is used as an abbreviation when representing a unit of electric current E R C A?

Amperage refers to the amount of electric current flowing

through a circuit and is measured in amperes, or amps. The

amount of water flowing through a pipe can be compared to

amperage. Amperage is abbreviated A or I.

So the answer is= "A" or "I"
Unit of Electric Current is= "A"
I is the symbol for current (I traditionally means intensity). Current is measured in amperes (symbol = A).

Letter ' I '

Other letters used as symbols for electricity or charge:

Either 'e' or 'v' for potential difference (voltage)

'Q' for charge (coulombs)

'R' for resistance (ohms)

'C' for capacitance (farads)

'L' for inductance (Henrys).
Unit of Electric Current is= "A"
I is the symbol for current (I traditionally means intensity). Current is measured in amperes (symbol = A).

Letter ' I '

Other letters used as symbols for electricity or charge:

Either 'e' or 'v' for potential difference (voltage)

'Q' for charge (coulombs)

'R' for resistance (ohms)

'C' for capacitance (farads)

'L' for inductance (Henrys).