The symbol for energy density is U or ρ.
In general density is represented by the Greek symbol rho (ρ)
The quantity symbol for electric flux density is D.
In lower classes viz sixth standard, the first letter of the word "density" ie 'd' is used. But later in higher studies instead 'd', 'rho' the greek letter is used as the symbol for density.
The symbol for potential energy is U.
The symbol for gravitational potential energy is "U" or "PE".
In general density is represented by the Greek symbol rho (ρ)
The quantity symbol for electric flux density is D.
Energy does not have a symbol.
In lower classes viz sixth standard, the first letter of the word "density" ie 'd' is used. But later in higher studies instead 'd', 'rho' the greek letter is used as the symbol for density.
The symbol for potential energy is U.
Density is the lower case greek letter rho.
The energy unit is Joule for which the symbol is J. Imperial units for energy do not have the symbol W, either.
The symbol for gravitational potential energy is "U" or "PE".
The symbol for Sempra Energy in the NYSE is: SRE.
density, a common symbol is the greek letter \rho
Energy density is the amount of power that can be stored ( in for example capacitance) to be then consumed over time, whereas power density is how much energy is consumed quickly like the energy stored in a capacitance can be consumed very quickly.
The symbol for Energy in Adventure Quest is a lightning bolt.