Which one of the following is not an expression for electric charge?

${\displaystyle \underset{\text{v}\text{o}\text{l}\text{u}\text{m}\text{e}}{\overset{\phantom{}}{}}}dV$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}$dxdA

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}dl$

line

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}E*dA$

${}_0{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}E*dA$