If \(\overrightarrow{\mathrm{E}} \) and \(\overrightarrow{\mathrm B} \) represent electric and magnetic field vectors of electromagnetic wave, the direction of propagation of electromagnetic wave is along
1
\(\overrightarrow{\mathrm B} \)
2
\(\overrightarrow{\mathrm{E}} \)
3
\(\overrightarrow{\mathrm{B}} \times \overrightarrow{\mathrm{E}} \)
4
\(\overrightarrow{\mathrm{E}} \times \overrightarrow{\mathrm{B}}\)