The electric field of a plane electromag...

The electric field of a plane electromagnetic wave propagating along the x direction in vacuum is `vecE = E_0 hatj cos (omegat - kx)` . The magnetic field `vecB`, at the moment t=0 is :

`vecB = E_0 sqrt(mu_0 in_0) cos (kx) hatk`

`vec B= E_0 sqrt(mu_0 in_0) cos (kx)hatj`

`vecB = (E_0)/(sqrt(mu_0 in_0)) cos (kx) hatk`

`vecB =(E_0)/(sqrt(mu_0 in_0)) cos (kx)hatk`

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