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NEET Sample Paper NEET Sample Test Paper-4

  • question_answer
    How many electrons per second pass through a cross-section of a copper wire carrying\[{{10}^{-16}}\text{ }A\]?

    A)  504 electrons/s           

    B)  400 electrons/s

    C)  524 electrons/s           

    D)  624 electrons/s

    Correct Answer: D

    Solution :

    \[{{10}^{-16}}A={{10}^{-16}}C/s\] Charge on electron \[=1.603\times {{10}^{-19}}\] C/electron Rate \[=\frac{{{10}^{-10}}}{1.603\times {{10}^{-19}}}\] = 624 electron/s


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