NEET Sample Paper NEET Sample Test Paper-50

  • question_answer If an electron is going in the direction of magnetic field \[\overrightarrow{B}\] with the velocity of \[\overrightarrow{v}\] then the force on electron is-

    A) Zero                             

    B) \[e\left( \overrightarrow{v}\,.\,\overrightarrow{B} \right)\]

    C) \[e\left( \overrightarrow{v}\,\,\times \,\,\overrightarrow{B} \right)\]                

    D) None of these

    Correct Answer: A

    Solution :

    \[\theta =0\] \[\sin \,\,\theta =0\] \[F\,\,=\,\,eVB\text{ }sin\text{ }\theta \,\,=\,\,0\]


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