An electron that is moving to the right experiences a magnetic field of 2.5 T directed upward. If the force on the electron is 2.4 x 10^-12N

Question

An electron that is moving to the right experiences a magnetic field of 2.5 T directed upward. If the force on the electron is 2.4 x 10^-12N, what is the speed of the electron?

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Lệ Thu 3 years 2021-07-28T00:55:02+00:00 1 Answers 29 views 0

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  1. Eirian
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    2021-07-28T00:56:55+00:00
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    Answer:

    5.99×10⁶ m/s

    Explanation:

    We look for the speed of the electron by applying,

    F = Bqv……………… Equation 1

    Where F = Force on the electron, B = magnetic field, q = charge of an electron, v = speed of the electron.

    make v the subject of the equation

    v = F/Bq………….. Equation 2

    Given: F = 2.4×10⁻¹² N, B = 2.5 T.

    Constant: q = 1.602×10⁻¹⁹ C

    Substitute into equation 2

    v = 2.4×10⁻¹² /(2.5× 1.602×10⁻¹⁹ )

    v = 5.99×10⁶ m/s

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