What letter is used to indicate voltage in Ohm's law calculations?

In Ohm's Law, voltage is typically represented by the letter 'V'. This law establishes a relationship between voltage (V), current (I), and resistance (R) in an electrical circuit, succinctly expressed by the formula V = I × R. Essentially, voltage is the driving force that pushes electric current through a circuit, and it is measured in volts.

The letter 'E' is sometimes used in certain contexts, particularly in European textbooks, to denote electromotive force or voltage, but in most standard practice and technical references in the field of electrical engineering and lineman work, 'V' is the widely accepted symbol for voltage. Consequently, while 'E' may appear relevant, 'V' remains the correct identifier for voltage in the context of Ohm’s Law. Understanding the symbols and their standard meanings is vital for effective communication in electrical work.