An Electromagnetic Wave Is Propagating Towards the West in a Vacuum.At

question 46

Multiple Choice

An electromagnetic wave is propagating towards the west in a vacuum.At a certain moment the direction of the $\vec { B }$ field vector associated with this wave points vertically upward.What is the direction of the $\vec { E }$ field vector?

• A)horizontal and pointing south
• B)vertical and pointing down
• C)horizontal and pointing north
• D)vertical and pointing upward
• E)horizontal and pointing east

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