If a conductor carries a non-zero net charge but is in electrostatic
equilibrium, the electric field inside it is…
1.
2.
3.
4.
5.
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non-zero and uniform.
non-zero and radially symmetric.
non-zero and non-symmetric
None of the above.
zero.
Oregon State University PH 213, Class #9
1
If a conductor carries a non-zero net charge but is in electrostatic
equilibrium, that net charge is…
1. on the outside surface of the conductor.
2. at the center of the conductor.
3. distributed uniformly throughout the volume of
the conductor.
4. None of the above.
5. There is not enough information.
4/21/17
Oregon State University PH 213, Class #9
2
We can use those two basic facts about any conductor that is already
in electrostatic equilibrium (a: internal E-field is zero; and b: net
charge resides on the outside surface), along with one more
application of Gauss’s Law, to calculate the E-field strength “just
outside” the surface of the conductor:
4/21/17
Oregon State University PH 213, Class #9
3
Example (concepts involved in HW1, problem 4)…
4/21/17
Oregon State University PH 213, Class #9
4