CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2005

  • question_answer
    An electric field of 1500 V/m and a magnetic field of 0.40 weber/\[metr{{e}^{2}}\] act on a moving electron. The minimum uniform speed along a straight line the electron could have is:

    A)  \[1.6\times {{10}^{15}}m/s\]    

    B)  \[1.6\times {{10}^{15}}m/s\]

    C)  \[3.75\times {{10}^{3}}m/s\]    

    D)  \[3.75\times {{10}^{2}}m/s\]

    Correct Answer: C

    Solution :

    Shunt resistance                                 \[S=\frac{{{I}_{g}}G}{I-{{I}_{g}}}\]                                 \[=\frac{0.1\,G}{1-0.1}\]                                 \[=\frac{G}{9}\]


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