a solenoid has an internal magnetic field of 0.28T. What is the energy density of the field?

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a solenoid has an internal magnetic field of 0.28T. What is the energy density of the field?

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Thanh Hà 5 years 2021-07-18T21:48:46+00:00 1 Answers 12 views 0

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  1. Xavia
    0
    2021-07-18T21:50:42+00:00
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    Answer:

    Energy density, E=3.11\times 10^4\ J

    Explanation:

    It is given that,

    Magnetic field in a solenoid is 0.28 T

    We need to find the energy density of the field. The energy density of the magnetic field is given by below formula as follows :

    E=\dfrac{B^2}{2\mu_o}\\\\E=\dfrac{(0.28)^2}{2\times 4\pi \times 10^{-7}}\\\\E=3.11\times 10^4\ J

    So, the energy density of this field is 3.11\times 10^4\ J.

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