27 a the interior field points in a direction that is

27)
______
A)
The interior field points in a direction that is parallel to the exterior field.
B)
The interior field points in a direction that is at right angles to the exterior field.
C)
There is no electric field in the block's interior.
D)
The interior field points in a direction opposite to the exterior field.
28)
If a solid metal sphere and a hollow metal sphere of equal diameters are each given the same charge, the
electric field ( ) midway between the sphere center and the surface is
28)
______

B)
zero for both.
C)
greater for the solid sphere than for the hollow sphere.
D)
equal in magnitude for both, but one is opposite in direction from the other.
29)
To be more effective, how should one shape the tip of a lightning rod?
29)
______
30)
A conductor is placed in an electric field under electrostatic conditions. Which of the following
statements is correct for this situation?
30)
______
A)
All valence electrons go to the surface of the conductor.
B)
The electric field on the surface of the conductor is perpendicular to the surface.
C)
The electric field is zero inside the conductor.
D)
All of the other answers apply.
31)
Which of the following is an accurate statement?
31)
______
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
32)
Negative charges, when released, accelerate toward regions of lower electric potential.
32)
______
33)

Electric potential decreases when moving farther from positive charges or nearer to negative charges.
33)
______
34)
Equipotential surfaces are always at right angles to the electric field.
34)
______
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
the question.
35)
A negative charge, if free, tries to move
35)
______
A)
away from infinity.
B)
from low potential to high potential.
C)
in the direction of the electric field.
D)
from high potential to low potential.
E)
toward infinity.