A thick walled hollow metal sphere contains a charge q as shown above. Visualize

Question

A thick walled hollow metal sphere contains a charge q as shown above. Visualize a spherical Gaussian surface which is entirely within the metal wall of the sphere (see dashed surface). The net electric flux through that surface:

A thick walled hollow metal sphere contains a charge q as shown above. Visualize a spherical Gaussian surface which is entirely within the metal wall of the sphere (see dashed surface). The net electric flux through that surface: depends on where in the metal the Gaussian surface is located is equal to -q/0 because a charge of -q is induced on the metal. is zero, because there can be no electric field inside a conductor carrying no current is equal to q/0 since the enclosed charge is q. depends on whether the outer sphere is grounded. A cubical closed metal box has a charge +q placed at its center, a charge -q at a point half way from the center to one corner. A spherical Gaussian surface inside the box surrounds the two charges. The net electric field flux through the surface is:

Explanation / Answer

is zero, because there can be no electric field inside a conductor carrying no current

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Electric flux = (net charge)/(epsilon0)

Inside the Guassian surface there is two charges: +q and -q.... Therefore net charge is zero.... and we will have:

electric flux = (net charge)/(epsilon0) = (0)/(epsilon0) = 0

Therefore answer is "Zero"

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