Question 1

Consider the spherical conductor shown in the image, which carries a net charge of $$-Q. $$According to Gauss's Law, what is the electric field at a point inside the conductor (not on the surface)?

Accepted Answer

$$E = 0$$

Question 2

If the spherical conductor in the image has a radius $$R$$ and a net charge $$-Q$$, what is the electric field just outside its surface?

Accepted Answer

$$E = \frac{-Q}{4\pi\$$epsilon_0$$ R^2$}$$

Question 3

Where does the net charge reside in a conductor such as the one shown in the image?

Accepted Answer

On the outer surface only

Question 4

If a Gaussian surface is drawn inside the conductor shown in the image, what is the net electric flux through that surface?

Accepted Answer

$$\Phi_E = 0$$

Question 5

Suppose the conductor in the image is placed in an external electric field. What happens to the electric field inside the conductor?

Accepted Answer

It remains zero

Question 6

If the conductor in the image is uncharged and placed in an external electric field, what happens to the free electrons inside the conductor?

Accepted Answer

They redistribute to cancel the internal field

Question 7

A spherical conductor of radius $$R$$ carries a charge $$-Q. $$What is the surface charge density on its surface?

Accepted Answer

$$\sigma = \frac{-Q}{4\pi R^2$}$$

Question 8

If the conductor in the image is hollow and a point charge $$q is $$placed at its center, what is the electric field at a point inside the shell but outside the center?

Accepted Answer

$$E = \frac{q}{4\pi\$$epsilon_0$$ r^2$}$$

Question 9

Which of the following statements best describes the electric field inside a conductor in electrostatic equilibrium?

Accepted Answer

The electric field is zero everywhere inside

Question 10

If the conductor in the image is grounded, what happens to its net charge?

Accepted Answer

It becomes zero

Gauss' Law and Conductors – Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard