Physic ch 22

c)3

Which of the figures best represents the charge distribution on the inner and outer walls of the conductor? (Figure 1) A)1 B)2 c)3

E)E(πR²)sinϕ . A)E(πR²)cosθ Electric flux = E dot A Electric Flux= EA cosθ ∴The cosine of an angle can be written as sine of its complementary angle. Substitute cosine with sine of the complementary angle of that is.

A disk with a radius of R is oriented with its normal unit vector at an angle θ with respect to a uniform electric field. Which of the following represent the electric flux through the disk? Pick all that apply. . A)E(πR²)cosθ B)E(2πR)cosθ C)E(πR²)sinθ D)E(2πR)sinθ E)E(πR²)sinϕ F)E(πR²)cosϕ

A)decreasing the given orientation angle of the disk C)increasing the strength of the electric field D)increasing the area of the disk

A disk with a radius of R is oriented with its normal unit vector at an angle θ with respect to a uniform electric field. Which of the following would result in an increase in the electric flux through the disk? Pick all that apply. A)decreasing the given orientation angle of the disk B)increasing the given orientation angle of the disk, but not exceeding an angle of 90° C)increasing the strength of the electric field D)increasing the area of the disk E)decreasing the strength of the electric field F)decreasing the area of the disk

D)The net charge uniformly distributes itself on the sphere's outer surface.

A net charge is placed on a hollow conducting isolated sphere. How does the net charge distribute itself? A)The net charge clumps together at some location within the sphere. B)The net charge uniformly distributes itself on the sphere's inner surface. C)The net charge uniformly distributes itself on the sphere's inner and outer surfaces. D)The net charge uniformly distributes itself on the sphere's outer surface. E)The net charge uniformly distributes itself throughout the thickness of the conducting sphere.

B)There is no electric field on the interior of the conducting sphere.

A solid conducting sphere is placed in an external uniform electric field. With regard to the electric field on the sphere's interior, which statement is correct? A)The interior field points in a direction perpendicular to the exterior field. B)There is no electric field on the interior of the conducting sphere. C)The interior field points in a direction parallel to the exterior field. D)The interior field points in a direction opposite to the exterior field.

A)S₃ E)S₁

Five point charges q and four Gaussian surfaces S are represented in the figure shown. Through which of the Gaussian surfaces are the total electric flux zero? A)S₃ B)S₂ C)S₄ D)The total electric flux is not zero through any of the Gaussian surfaces. E)S₁

E)2q/ε₀

Five point charges q and four Gaussian surfaces S are shown in the figure. What is the total electric flux through surface S2? A)q/ε₀ B)5q/ε₀ C)zero D)3q/ε₀ E)2q/ε₀ F)4q/ε₀

B)The total electric flux through the two surfaces is equal.

Gaussian surfaces A and B enclose the same positive point charge. The area of surface A is two times larger than that of surface B. How does the total electric flux through the two surfaces compare? A)The total electric flux through surface A is eight times larger than that through surface B. B)The total electric flux through the two surfaces is equal. C)The total electric flux through surface A is four times larger than that through surface B. D)The total electric flux through surface B is eight times larger than that through surface A. E)The total electric flux through surface B is four times larger than that through surface A.

D)The electric flux is the largest through the surface shown in (a)

In the figure, a uniform electric field is shown passing through a flat area A. In (a), the surface of area A is perpendicular to the electric field. In (b), the surface is tilted by an angle θ with respect to the electric field. In (c), the surface is parallel to the electric field. In which orientation is the electric flux through the surface the largest? A) The electric flux is nonzero and equal through all of the surfaces shown. B)The electric flux is zero through all of the surfaces shown. C)The electric flux is the largest through the surface shown in (c). D)The electric flux is the largest through the surface shown in (a). E)The electric flux is the largest through the surface shown in (b).