The figure shows electric lines of force emerging from a charged body. If the electric field at A and B are $E_A$ and $E_B$ respectively, then  

$$\begin{gathered} {\mathrm{E}}_{\mathrm{A}}>{\mathrm{E}}_{\mathrm{B}} \\ \mathrm{number} \mathrm{of} \mathrm{lines} \mathrm{of} \mathrm{force} \mathrm{per} \mathrm{unit} \mathrm{area} \mathrm{is} \mathrm{the} \mathrm{measure} \mathrm{of} \mathrm{electric} \mathrm{field} \mathrm{at} \mathrm{a} \mathrm{place} \\ \mathrm{here} \mathrm{number} \mathrm{of} \mathrm{lines} \mathrm{of} \mathrm{force} \mathrm{are} \mathrm{closely} \mathrm{spaced} \mathrm{at} \mathrm{A} . \end{gathered}$$