# Problem: At one instant the electric and magnetic fields at one point of an electromagnetic wave are E = (25 î + 350 ĵ - 50 k̂) V/m and B = B0 (7.2 î - 7.0 ĵ + a k̂) μTWhat is the value of a?

###### FREE Expert Solution

$\overline{){\mathbf{E}}{\mathbf{·}}{\mathbf{B}}{\mathbf{=}}{\mathbf{0}}}$

E = (25 + 350 - 50 )

B = B0 (7.2 - 7.0 + a )μT(10-6T/μT) = B0 (7.2 - 7.0 + a ) 10-6

###### Problem Details

At one instant the electric and magnetic fields at one point of an electromagnetic wave are E = (25 + 350 - 50 ) V/m and B = B0 (7.2 - 7.0 + a ) μT

What is the value of a?