MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the charge density of the conducting plate shown below if a total charge of 10C is applied to it? Consider the bigger circle as a solid part and a smaller circle as a hollow part. |
| A. | 13.26 C/m2 |
| B. | 5.25 C/m2 |
| C. | 0.7 C/m2 |
| D. | 17.28 C/m2 |
| Answer» B. 5.25 C/m2 | |
| 2. |
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/m3 |
| B. | 4.76 C/m3 |
| C. | 0.1 C/m3 |
| D. | 2.38 C/m3 |
| Answer» E. | |
| 3. |
The term ‘volume charge density’ is valid for a solid conducting sphere. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
A charge is distributed along an infinite curved line in space with linear charge distribution λ. 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 | |
| 5. |
What is the dimension of linear charge density? |
| A. | [I T L-1] |
| B. | [I T-1 L] |
| C. | [I T L] |
| D. | [I-1 T-1 L] |
| Answer» B. [I T-1 L] | |
| 6. |
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*(R2-r2) |
| B. | π*a*(R2-r2) |
| C. | a*(R-r) |
| D. | π*a* R2 |
| Answer» C. a*(R-r) | |
| 7. |
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*1020 |
| B. | 2.77*1010 |
| C. | 1.77*1010 |
| D. | 5.4*1010 |
| Answer» C. 1.77*1010 | |