Write the relation between the magnitude of electric and magnetic fields in an electromagnetic wave with speed of light and hence find the magnitude of the electric field at a point in space and time if the magnetic field at that place is `2 xx 10^(-8) T`.

Explanation

`E/B = (E_0)/(B_0) = C`
or ` E_0 = CB_0`
` E_0 = 3 xx 10^8 xx 2 xx 10^(-8)`
`E_0 = 6NC^(-1)`