Explore topic-wise MCQs in Physics.

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.
Discussion
2.

The term volume charge density is valid for a solid conducting sphere.

A. True
B. False
Answer» C.
Discussion
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
Discussion
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]
Discussion
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)
Discussion
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>
Discussion