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Electromagnetic Theory Mcqs

Q:

When two vectors are perpendicular, their

A) Dot product is zero B) Cross product is zero
C) Both are zero D) Both are not necessarily zero
 
Answer & Explanation Answer: A) Dot product is zero

Explanation: Dot product of two perpendicular vectors is given by A.B = |a||b|cos 90, which is zero. Thus, dot product is zero and vectors are perpendicular.

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