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56. A surface
completely surrounds a +2.0 x 10-6 C charge. Find the electric
flux through this surface when the surface is (a) a
sphere with a radius of 0.50 m, (b) a
sphere with a radius of 0.25 m, and (c) a
cube with edges that are 0.25 m long. |
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Gauss’s Law tells us that the
electric flux is equal to the net charge enclosed divided by the permittivity
of free space or in equation form |
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Since in all three of these
shapes the surface area encloses the charge, the flux is the same regardless
of the shape. |
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