MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a charged body is moved in an electric field against the Coulomb force, then ________ |
| A. | Work is done on the body by an external agent |
| B. | Work is done by the electric field |
| C. | Electric field intensity decreases |
| D. | The total energy of the system decreases |
| Answer» B. Work is done by the electric field | |
| 2. |
Earth s potential is _______ |
| A. | Zero |
| B. | Highly positive |
| C. | Highly negative |
| D. | Varies from place to place |
| Answer» B. Highly positive | |
| 3. |
By performing a set of experiments, a scientist found that the electric field between two points A and B is zero. What can he conclude regarding the potential of the two points? |
| A. | V<sub>A</sub>=0, V<sub>B</sub>=0 |
| B. | V<sub>A</sub>>V<sub>B</sub> |
| C. | V<sub>A</sub>+V<sub>B</sub> |
| D. | V<sub>A</sub>=V<sub>B</sub> |
| Answer» E. | |
| 4. |
The electric potential difference between two points is a path function. The statement is __________ |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
1 V/m= _______ |
| A. | 1N/C |
| B. | 3*10<sup>10</sup> N/C |
| C. | 10<sup>7</sup> N/C |
| D. | 10<sup>10</sup> N/C |
| Answer» B. 3*10<sup>10</sup> N/C | |
| 6. |
1 electron volt= __________ J. |
| A. | 1.6*10<sup>-19</sup> |
| B. | 4.8*10<sup>-19</sup> |
| C. | 1.6*10<sup>-10</sup> |
| D. | 10 |
| Answer» B. 4.8*10<sup>-19</sup> | |
| 7. |
Electric potential varies with distance such that V(x) =ax-bx3; where a and b are constants. Where will the electric field intensity be zero? |
| A. | x= ( frac {a}{b} ) |
| B. | x= ( frac {a}{3b} ) |
| C. | x= ( sqrt{ frac {a}{b}} ) |
| D. | x=+ ( sqrt{ frac {a}{3b}} ) and x=- ( sqrt{ frac {a}{3b}} ) |
| Answer» E. | |
| 8. |
What is the dimension of electric potential? |
| A. | [M L T<sup>-2</sup>] |
| B. | [M L T<sup>-3</sup> I] |
| C. | [M L T<sup>-3</sup> I<sup>-1</sup>] |
| D. | [M L<sup>2</sup> T<sup>-3</sup> I] |
| Answer» D. [M L<sup>2</sup> T<sup>-3</sup> I] | |
| 9. |
Work done to bring a unit positive charge from infinity to a point in an electric field is known as _______ |
| A. | Electric potential |
| B. | Electric field intensity |
| C. | Electric dipole moment |
| D. | The total energy of the point charge |
| Answer» B. Electric field intensity | |