The uppercase letter "I" is used for DC current, or for the average current; the lowercase letter "i" is used for instantaneous current.
"I" is the letter typically used to represent current in electrical equations.
The letter 'I' is used to represent current. Its SI units are the ampere,(amps),(A).
The letter "I" is normally used for direct current, or for the average current in the case of AC. The lower-case version, "i", is used for the instantaneous current, in the case of AC.
Intensity.
the letter used is "I"
The letter "I" (capital "i"). Lowercase "i" is also used sometimes (for instantaneous current).
The letter used to represent current in equations is "I." This designation comes from the French term "intensité de courant," which translates to "current intensity." In electrical equations, current is typically measured in amperes (A).
The first line in a business letter that contains the current date and that is positioned just below the letterhead is the date of the letter.
The letter L (written in uppercase) is used as a symbol for inductance. If you mean the letter I (uppercase i), that refers to current.
Electrical current is measured in Amperes which is abbreviated to amps. When dealing with formulae the letter I is used to represent current, for example: Power = Voltage × Current = volts × amps = V × I Small currents in electrical engineering use the lower case i; this can cause confusion with the lower case i that mathematicians use for √-1, so they use j for √-1 instead.
The symbol for electric current is "I" because it stands for intensity, which is an older term used for electric current. The letter "C" is typically used to represent charge in electrical equations, so using "I" for current helps differentiate between the two.
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).