An electromagnetic wave going through vacuum is described by $E= E_0 sin(kx - ωt) ; B = B_0 sin(kx - ωt)$ Which of the following equation is true?

$E_0k = B_0ω$ $E_0ω=B_0k$ $E_0B_0 = ωk$ None of these

$E_0k = B_0ω$

Use method of dimensions. Equating the dimensions of two sides we note the relation (a)Is dimensionally correct