Q.
An electromagnetic wave is travelling to the east. At one instant at a given point its E→ points straight up. What is the direction of B→ ?
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a
North
b
Down
c
East
d
South
answer is D.
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Detailed Solution
The direction of propagation of electromagnetic wave is given by n^=E→×B→E→×B→.As per the given condition, the direction of magnetic field vector will be along south
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