MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An electric field \(3\hat{j} + 4\hat{k}\) N/C is present at a place. What will be the electric flux passing through a square plate if the plate is placed in the y-z plane? |
| A. | 7 Nm2C-1 |
| B. | 25 Nm2C-1 |
| C. | Zero |
| D. | 17 Nm2C-1 |
| Answer» D. 17 Nm2C-1 | |
| 2. |
A non-conducting sphere has uniform charge density in it. The electric field at a point inside the sphere will be _______ |
| A. | Zero |
| B. | Only due to the charge inside that point |
| C. | Only due to the charge outside that point |
| D. | Due to the entire charge of the sphere |
| Answer» C. Only due to the charge outside that point | |
| 3. |
In the CGS system, \(\frac {1}{\varepsilon_o}\) is replaced by _______ if k is the dielectric constant of the medium. |
| A. | \(\frac {4\pi}{k}\) |
| B. | \(\frac {2\pi}{k}\) |
| C. | \(\frac {1}{k}\) |
| D. | 1 |
| Answer» B. \(\frac {2\pi}{k}\) | |
| 4. |
Gauss’s Law is applicable only in the case of the electric field. This statement is __________ |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
An electric field E is present perpendicular to a square plate of side length L. What is the flux passing through the plate? |
| A. | LE |
| B. | L2E |
| C. | \(\frac {L^2}{E}\) |
| D. | Zero |
| Answer» C. \(\frac {L^2}{E}\) | |
| 6. |
Net inward and outward flux of a closed surface are φ1 and φ2. What is the charge enclosed inside the surface? |
| A. | Zero |
| B. | -(∅1-∅2)εo |
| C. | (∅1-∅2)εo |
| D. | \(\frac {(\emptyset_1 + \emptyset_2)}{\varepsilon_o}\) |
| Answer» C. (∅1-∅2)εo | |
| 7. |
8 electric dipoles having charges e are placed at the center of a cube. The net flux coming out of the cube surface is _________ |
| A. | Zero |
| B. | \(\frac {e}{\varepsilon_o}\) |
| C. | \(\frac {8e}{\varepsilon_o}\) |
| D. | \(\frac {16e}{\varepsilon_o}\) |
| Answer» B. \(\frac {e}{\varepsilon_o}\) | |
| 8. |
What will be the total flux passing through the cylinder if the surface A and B have surface area S? |
| A. | ES |
| B. | –ES |
| C. | Zero |
| D. | \(\frac {ES}{\varepsilon_o}\) |
| Answer» D. \(\frac {ES}{\varepsilon_o}\) | |
| 9. |
An electric charge q is placed at one of the corner points of a cube of side a. What will be the net outwards flux coming out of the cube due to the point charge? |
| A. | \(\frac {q}{\varepsilon_o}\) |
| B. | \(\frac {q}{2\varepsilon_o}\) |
| C. | \(\frac {q}{4\varepsilon_o}\) |
| D. | \(\frac {q}{8\varepsilon_o}\) |
| Answer» E. | |
| 10. |
Electric field outside this Gaussian surface will be ___________ |
| A. | Only for q2 |
| B. | Only for positive charges |
| C. | Zero |
| D. | For all the charges |
| Answer» D. For all the charges | |
| 11. |
What is the number of electric field lines coming out from a 1C charge? |
| A. | 9*109 |
| B. | 8.85*10-12 |
| C. | \(\frac {1}{8.85}\)*10-12 |
| D. | Infinite |
| Answer» D. Infinite | |