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VIT Engineering VIT Engineering Solved Paper-2015

  • question_answer
    An electromagnetic wave propagating along north lies its electric field vertically upward. The magnetic field vector points towards

    A) downward                         

    B) east                 

    C) north                    

    D) south

    Correct Answer: B

    Solution :

    As the electromagnetic wave is the crossed field of electric and magnetic waves. So, the direction of propagation of EM wave is the direction of vector \[E\times B\] Here E is upward and \[(E\times B)\] is towards   north. So, from right hand thumb rule B will be along east.          


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