MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A solid non conducting sphere of radius 1m carries a total charge of 10 C which is uniformly distributed throughout the sphere. Determine the charge density of the sphere. |
| A. | 10 C/m<sup>3</sup> |
| B. | 4.76 C/m<sup>3</sup> |
| C. | 0.1 C/m<sup>3</sup> |
| D. | 2.38 C/m<sup>3</sup> |
| Answer» E. | |
| 2. |
The term volume charge density is valid for a solid conducting sphere. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
A charge is distributed along an infinite curved line in space with linear charge distribution . What will be the amount of force on a point charge q kept at a certain distance from the line? |
| A. | q ( frac { lambda}{r^2} hat{r} )dl |
| B. | q ( frac { lambda}{r^2} hat{r} )dr |
| C. | q ( frac { lambda}{r^3} hat{r} )dl |
| D. | q ( frac { lambda}{r^2} ) |
| Answer» B. q ( frac { lambda}{r^2} hat{r} )dr | |
| 4. |
What is the dimension of linear charge density? |
| A. | [I T L<sup>-1</sup>] |
| B. | [I T<sup>-1</sup> L] |
| C. | [I T L] |
| D. | [I<sup>-1</sup> T<sup>-1</sup> L] |
| Answer» B. [I T<sup>-1</sup> L] | |
| 5. |
A circular annulus of inner radius r and outer radius R has a uniform charge density a. What will be the total charge on the annulus? |
| A. | a*(R<sup>2</sup>-r<sup>2</sup>) |
| B. | *a*(R<sup>2</sup>-r<sup>2</sup>) |
| C. | a*(R-r) |
| D. | *a* R<sup>2</sup> |
| Answer» C. a*(R-r) | |
| 6. |
How many electrons must be added to an isolated spherical conductor of radius 20cm to produce an electric field 1000N/C just outside the surface? |
| A. | 2.77*10<sup>20</sup> |
| B. | 2.77*10<sup>10</sup> |
| C. | 1.77*10<sup>10</sup> |
| D. | 5.4*10<sup>10</sup> |
| Answer» C. 1.77*10<sup>10</sup> | |