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  5. Magnetic Effects of Current / करंट का चुंबकीय प्रभाव

JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव JEE PYQ-Magnetic Effects Of Current

  • question_answer
    The velocity of certain ions that pass un deflected through crossed electric field E = 7.7 k V/m and magnetic field B = 0.14T is                                     [JEE ONLINE 07-05-2012]

    A) 18km/s

    B) 77km/s

    C) 55km/s

    D) 1078 km/s

    Correct Answer: C

    Solution :

    [c] As velocity\[v=\frac{E}{B}=\frac{7.7\times {{10}^{3}}}{0.14}=55km/s\]


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