astronomy

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Which statement gives the relationship between the waves in the electric and magnetic fields in an electromagnetic wave?

a)they are in phase and parrallel to each other in space

b)they are 90 degrees out of phase but parrallel in space

c)they are in phase but perpendicular to each other in space

d)they are 180 degrees out of phase and random in their inclinations to each other

e)they are in phase but opposite in their direction of motion

• astronomy -

The answer is (c). E and B in an electromegnetic wave are perpendicular to each other AND to the direction of propagation.

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