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- 1. Multiple ChoiceThe electric flux Φ through a surfaceis the amount of electric field piercing the surfaceis the electric field multiplied by the area.does not depend on the area involvedis the line integral of the electric field around the edge of the surface
- 2. Multiple ChoiceCharge Q is distributed uniformly throughout a spherical insulating shell. The net electric flux through the inner surface of the shell is:0Q/e02Q/e0Q/4*Pi*e0
- 3. Multiple ChoiceThe area vector for a flat surfaceis parallel to the surface and has a magnitude equal to the length of a side of the surface.is perpendicular to the surface and has a magnitude equal to the length of a side of the surface.is parallel to the surface and has a magnitude equal to the area of the surface.is perpendicular to the surface and has a magnitude equal to the area of the surface.
- 4. Multiple ChoiceWhen a piece of paper is held with one face perpendicular to a uniform electric field the flux through it is 25 N×m2/C. When the paper is turned 25° with respect to the field the flux through it is:0 N×m2/C11 N×m2/C12 N×m2/C23 N×m2/C
- 5. Multiple ChoiceA physics instructor in an anteroom charges an electrostatic generator to 25 mC, then carries it into the lecture hall. The net electric flux through the lecture hall walls is:0 N×m2/C25 x 10–6 N×m2/C2.2 x 105 N×m2/C2.8 x 109 N×m2/C
- 6. Multiple ChoiceA point particle with charge q is placed inside a cube but not at its center. The electric flux through any one side of the cube:is zerois q/2ε0is q/4ε0is q/6ε0
- 7. Multiple Choice
Electric field at a point inside the hollow spherical shell is
1
Kq/r2
Kq/r3
Zero
- 8. Multiple Choice
Four charges are placed in three-dimensional space. The charges have magnitudes +3q, −q, +2q, and −7q. If a Gaussian surface encloses all the charges, what will be the electric flux through that surface?
−13q/E0
−3q/E0
3q/E0
13q/E0
- 9. Multiple Choice
The figure below shows five Gaussian surfaces (F G/ .) surrounding a distribution of charges. Which surface has a flux of Q/E0
a
b
c
d
- 10. Multiple Choice
The figure below shows a distribution of charges. The flux of the electric field due to these charges through the surface E is _____.
0
q/Eo
2q/Eo
3q/Eo
- 11. Multiple Choice
The electric flux through a spherical Gaussian surface of radius R centered about an amount of charge Q is 1200 N/C m2. What is the electric flux through a cubic Gaussian surface of side R centered about the same charge Q?
Less than 1200
More than 1200
Equal to 1200
It cannot be determined with the given parameters
- 12. Multiple Choice
Consider the four cases shown below. Each one contains either a charge q or a charge 2q. A Gaussian surface surrounds the charged particle in each case. Considering the electric flux through each of the Gaussian surfaces, which of the following comparative statements is correct
1=3 less than 2=4
1=3 greater than 2=4
1=2 less than 3=4
3=4 greater than 2=3
- 13. Multiple Choice
A point charge, +Q, is located on the x-axis at x = a, and second point charge, −Q, is located on the x- axis at X = −a. A Gaussian surface with radius R = 2a is centered at the origin. The flux through this Gaussian surface is ____.
0
2Q/ε0
more than 0
less than 0
- 14. Multiple Choice
total flux over a closed surface is equal to
1/ƹ0
q/ƹ0
kq/ƹ0
zero
- 15. Multiple Choice
The electric flux through the planar surface above ( positive unit normal to left ) is:
Positive
Negative
Zero
- 16. Multiple Choice
positive (net outward flux)
negative (net outward flux).
positive (net inward flux)
negative (net inward flux)
zero
- 17. Multiple Choice
What is the general equation for Electric Field?
- 18. Multiple Choice
What is the relationship between Electric Flux and the charge enclosed?
As the charge enclosed decreases, the flux increases.
As the charge enclosed increases, the flux increases.
There is no relationship.
Flux is a constant, it never changes.
- 19. Multiple Choice
What does Gauss Law take into consideration out of the following choices?
Pressure
Volume of a particle
Measure of an enclosed charge
Magnetism
- 20. Multiple Choice
A
B
C
D
- Answer choicesTagsAnswer choicesTags