1.
|
|
Which of the following is not a unit for the Electric Field?
|
| N/C |
| V/m |
| V/C |
| J/Cm |
|
2.
|
|
A 9 volt transistor battery has
|
| more energy available than a 6 volt lantern battery. |
| more energy available than a 1/1/2 volt flashlight battery. |
| more energy available per charge moved than a 6 volt lantern battery. |
| all of the above. |
| none of the above. |
|
3.
|
|
A proton is accelerated from rest through a potential of 500 volts. Its final kinetic energy is
|
| 50 eV. |
| 500 eV. |
| 1000 eV. |
| 2000 eV. |
|
4.
|
|
What is the final velocity of the proton in the previous problem? (The mass of the proton is 1.67x10-27 kg)
|
| 8x1014 m/s |
| 1000 m/s |
| 3x108 m/s |
| 3x105 m/s |
|
5.
|
|
An alpha particle (Q=+2e) is accelerated from rest through a potential difference of 500 volts. Its final kinetic energy is
|
| 50 eV |
| 500 eV |
| 1000 eV |
| 2000 eV |
|
6.
|
|
Two alpha particles are placed near each other so that each experiences a potential of 500 volts. They are allowed to fly far apart. What is the final potential of each?
|
| zero. |
| 500 volts. |
| -500 volts. |
| 250 volts. |
|
7.
|
|
What is the final kinetic energy of each alpha particle in the previous question?
|
| 500 eV |
| 1000 eV |
| 2000 eV |
| zero |
|
8.
|
|
If Q1 and Q2 are equal and oppositely charged, what is the potential at point B?
|
| zero |
| negative |
| positive |
| Cannot be determined. |
|
9.
|
|
In the previous question the work required to move a positive charge from A to B is
|
| zero. |
| positive. |
| negative. |
| Cannot be determined. |
|
10.
|
|
If both charges in the figure are positive and the potential at B is 500 volts, what is the potential at A, 3 meters above the point B?
|
| 0 volts. |
| 250 volts. |
| 400 volts. |
| 500 volts. |
|
11.
|
|
If Q1 in the above figure is twice Q2 and both are positive, where can a point of zero potential be found?
|
| Between the two charges. |
| To the right of Q2. |
| To the left of Q2. |
| At no finite distance from Q2 . |
|
12.
|
|
In the previous question if Q1 is negative and twice Q2 which is positive where will the potential be zero?
|
| 3.33 m to the left of Q1. |
| 3.33 m to the right of Q1. |
| 3.33 m to the left of Q2. |
| 3.33 m to the right of Q2. |
|
13.
|
|
Two parallel plates separated by 1 mm have a voltage difference of 100 volts between them, what is the electric field?
|
| 10 V/m |
| 100 V/m |
| 1000 V/m |
| 10000 V/m |
| 100000 V/m |
| 1000000 V/m |
|
14.
|
|
The electric field between two parallel plates is 1000 V/m, if the the potential difference across the plates is 50 V, what is the plate separation?
|
| 0.01 m |
| 0.02 m |
| 0.03 m |
| 0.04 m |
| 0.05 m |
|
15.
|
|
 . The electric potential inside a charged metal sphere at a radius R is
|
| zero. |
| constant and independent of R. |
| proportional to R. |
| proportional to R2 |
| proportional to 1/R. |
| proportional to 1/R2 |
|
16.
|
|
In the previous question the electric potential outside the sphere at a radius R is
|
| zero. |
| constant and independent of R |
| proportional to R. |
| proportional to R2 |
| proportional to 1/R. |
| proportional to 1/R2 |
|
17.
|
|
At the surface of a metal sphere the relationship between V and E is
|
| V = E |
| V = E/R |
| V = ER |
| V = ER2 |
|
18.
|
|
If the breakdown value for the electric field is 3x106 N/C, what is the maximum voltage that a metal sphere of diameter 1 cm can have without causing a breakdown.
|
| 15 V |
| 150 V |
| 1500 V |
| 15000 |
| 30000 V |
|
19.
|
|
 All charges in the figure are 1 mC. Which set of charges has positive potential energy?
|
| a |
| b |
| c |
|
20.
|
|
In the previous question which set of charges have the greatest negative potential energy.
|
| a |
| b |
| c |
|
21.
|
|
In question 19 which set of charges would require the most work to completely separate them?
|
| a |
| b |
| c |
|
22.
|
|
In a certain region of space the electric potential from a given charge distribution can be represented by V= 3x2+2y+6
In units of volts. What is the associated electric field?
|
| Ex= 6x, Ey= 2, Ez=0 |
| Ex= -6x, Ey= -2, Ez=6 |
| Ex= -3x, Ey= -2, Ez=0 |
| Ex= -6x, Ey= -2, Ez=0 |
|
23.
|
|
What is the magnitude of the force on a 2 Coulomb charge placed at the point x=0.5 m, y=2 m and z=0 m.
|
| 0 N |
| 3.6 N |
| 7.2 N |
| 14 N |
|
24.
|
|
What would be the answer to the previous question if the particle was at x=0 m, y=0 m and z=0 m?
|
| zero N |
| 2 N |
| 4 N |
| 12 N |
|
25.
|
|
What is the change in potential in going from the point in question 23 to the point in question 24?
|
| 0 V |
| -2.5 V |
| -4.5 V |
| -5.5 V |
