Which one of the following letters is used in formulas as the symbol for voltage?
A. P
B. W
C. I
D. E
http://wiki.answers.com/Q/What_is_the_symbol_used_in_formulas_to_represent_voltage?#slide=1
Although E is the answer they are looking for, E is much more commonly used for the electric field strength which is Volts per meter.
The question is poorly written.
I guess the context of the subject, the question and its choices would indicate that the class is in electricity or electronics, and not physics.
Not much call for Electric Field strength in appliance repair... :-)
To determine which letter is used in formulas as the symbol for voltage, we need to refer to a reliable source.
In this case, the international standard symbol for voltage is the letter "V". It is derived from the Latin word "volt", which is the unit of measurement for electrical potential difference or voltage.
Therefore, the correct answer is not listed among the options provided. The letter "V" is used as the symbol for voltage in formulas.