中国大学MOOC: If the electric flux through a closed surface is 0, then there is no net charge inside the surface.
举一反三
- If the electric flux through a closed surface is 0, then there is no net charge inside the surface. A: 正确 B: 错误
- On the surface of a perfect conductor, the normal component of the electric displacement vector is A: continuous with the normal component of the electric displacement vector inside the conductor B: uncertain C: equal to the surface density of free charge on the conductor surface. D: equal to zero
- The flux of electric field intensity E through a closed surface is equal to zero, which means in the surface A: there are more positive charges than negative charges. B: there are more negative charges than positive charges. C: there are the same quantity of the positive charges and negative charges. D: there is no polarized chargeharge.
- If there is no charge inside the Gaussian surface, the field [img=14x24]180356c02c2f797.png[/img] on the surface must be zero everywhere.
- The electric potential inside a charged solid spherical conductor in equilibrium A: is always zero. B: is constant and equal to its value at the surface. C: decreases from its value at the surface to a value of zero at the center. D: increases from its value at the surface to a value at the center that is a multiple of the potential at the surface