The relation between work (W) against electric field and electric flux density \(\vec D\) is given by:
1
\(W = \frac{1}{2}\smallint \frac{{{D^2}}}{\varepsilon }dv\)
2
\(W = \frac{1}{2}\smallint \varepsilon {D^2}\)
3
\(W = \smallint {D^2}dv\)
4
\(W = \frac{1}{2}\smallint {D^2}dv\)