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24 April, 10:18

At a certain altitude above the Earth's surface, the electric field has a magnitude of 135 V/m. How much energy is stored in 1.00 m3 of air due to this field?

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  1. 24 April, 10:24
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    Given that,

    Electric field E=135V/m

    Energy stored in 1m³of air=?

    The energy stored in an electric field is given as

    u = ½ εo E²

    Where

    U is the energy stored

    εo is permissivity and it value is 8.85*10^-12C²/N ... m²

    And E is the electric field

    Then,

    U=½*8.85*10^-12*135²

    U=8.06*10^-8J/m³

    Then, the energy stored in 1m³ of air is 8.06*10^-8 J/m³
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