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# Electric Flux

Electric flux connects the geometry of conductors to the fields they generate. Learn this powerful tool and shortcut your way to the electric field of symmetrical arrangements like wires and sheets.

The value of the permittivity constant is \(\varepsilon_0=8.85 \times 10^{-12} \text{ C}^2\text{/N}\cdot\text{m}^2.\)

The electric field in a certain device is vertically downward. At a height of \(27\text{ m}\) from the bottom of the device the magnitude of electric field is \(50.0 \text{ N/C},\) and at a height of \(18\text{ m}\) from the bottom the magnitude of electric field is \(80.0\text{ N/C}.\) If the bottom face of a cube with side length \(9\text{ m}\) is at a height of \(18\text{ m}\) from the bottom of the device, what is the approximate net amount of charge contained in the cube?

The value of the permittivity constant is \(\varepsilon_0=8.85 \times 10^{-12} \text{ C}^2\text{/N}\cdot\text{m}^2.\)

The value of the permittivity constant is \(\varepsilon_0=8.85 \times 10^{-12} \text{ C}^2\text{/N}\cdot\text{m}^2.\)

The charge of a proton is \(q=+1.6 \times 10^{-19}\text{ C}\) and the value of the permittivity constant is \(\varepsilon_0=8.85 \times 10^{-12} \text{ C}^2\text{/N}\cdot\text{m}^2.\)

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