Uppercase 'I' is used for DC or effective (RMS) alternating current (which is a scalar value).
Lowercase 'i' is used for instantaneous current (usually expressed as a complex value).
The unit of Current is Ampere. Abbreviation of Current is 'I' and that of Ampere is 'A'. The unit of Resistance is ohm. Abbreviation of Resistance is 'R' and that of ohm is the symbol of 'omega' or the symbol of 'ohm'.
AC means alternating current DC means direct current there is no polarity reversal
A Giant Penis
For instance, there is the difference between -direct current- and -alternate current- For example: a simple battery gives direct current, e bicycle-dynamo generates alternate-current, so plus becomes minus and vice versa several times a second. A symbol for direct current can be: ____ - - - A symbol for alternate current is a small sine-wave: ~
a straight under G means its for direct current or if its zig zag its for alternating current...
an A
The symbol for electric current is I
A
Current gain configuration is the change in collector current divided by the change in the emitter current. Its symbol is hfe, or h-parameter.
It can be anything, as long as it's clearly defined in accompanying text.The most commonly used is ' I '. Current has the units of Amperes.
I is the international (SI) symbol for electrical current.
Amperes are the units; 'I' is the symbol chosen to represent amperage.
sine wave symbol
I
the symbol of current density is 'J'. & its unit is (Amp/m^2)
The symbol for alternating current is: ~
The correct symbol to represent the units of electric current is "I", which is measured in amperes (A).