At t_o a metal sphere is given a uniform volume charge density, with total c g t

Question

At t_o a metal sphere is given a uniform volume charge density, with total c g the following student discussion: Student 1: 'The charges ore uniformly distributed throughout the sphere, so t should be stable. Charges won't move after .' Student 2: *1 disagree. The electric field inside the sphere isn't zero, so charges wil force at f, and will move. That means the distribution isn't stable. Use the following questions as a guide to determine which student, if either, is correct. A sphcrical Gaussian surface is centered inside the sphere. At t_c. is the net flux through the Gaussian surface positive, negative, or zero? At " which direction is the electric field at point A? If the electric field is zero, state so explicitly. Which student, if cither, is correct? Explain.

Explanation / Answer

PART A)

At t = to the charge has tendency to move outwards as it is not stable initially

Hence the flux on the inner gaussian surface will be POSITIVE

that means the flux will come out of the surface

PART B)

Since the flux is coming positive so the electric field at point A will be radially OUTWARDS

PART C)

STUDENT 2 is correct

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