MCQs of Static Electric Fields (Electromagnetics Field - 3140912)

Electromagnetics Field (3140912) MCQs

MCQs of Static Electric Fields

Showing 31 to 40 out of 96 Questions

31.

Divergence theorem best relates to _________ .

(a)	Gauss law
(b)	Stoke's law
(c)	Ampere law
(d)	Lenz law

32.

Gaussian surface for a line charge will be _________.

(a)	Sphere
(b)	Cube
(c)	Cylinder
(d)	Any arbitrary surface

33.

Gaussian surface for a point charge will be ___________ .

(a)	Sphere
(b)	Cube
(c)	Cylinder
(d)	Any arbitrary surface

34.

Electric flux density exists due to point charge present in free space. If the charge is moved to a medium with relative permittivity of 5, the electric flux density now will ____________ .

(a)	increase by 5 times
(b)	decrease by 0.2 times
(c)	increase by 25 times
(d)	remains unchanged

35.

Gauss law can be used to calculate _________ .

(a)	Electric field intensity
(b)	Electric flux density
(c)	Charge
(d)	All of the above

36.

Electric field intensity

E

measured at a point in a free space due to a line charge is

60 a_{ρ}

V/m. The value of Electric flux density

D

at the same point will be _______.

(a)	$53 C / m^{2}$
(b)	$5.3 C / m^{2}$
(c)	$5.3 n C / m^{2}$
(d)	$53 n C / m^{2}$

37.

Electric flux density

D

at a point (4,0,3) due to a point charge of

- 5 π m C

at (4,0,0) will be _____ .

(a)	$0.138 a_{z} m C / m^{2}$
(b)	$- 0.138 a_{z} m C / m^{2}$
(c)	$0.417 a_{z} m C / m^{2}$
(d)	$- 0.417 a_{z} m C / m^{2}$

38.

A uniform line charge with density

3 μ C / m

lies along the x-axis. The flux coming out of a spherical surface centered at the origin and with radius of 3 m will be __________ .

(a)	$1 μ C$
(b)	$3 μ C$
(c)	$9 μ C$
(d)	$18 μ C$

39.

Surface charge with charge density

40 μ C / m^{2}

is located at z = 0.5m. What will be the flux coming out of a cube centered at origin and with one of its side measuring 2m ?

(a)	0
(b)	$10 μ C$
(c)	$80 μ C$
(d)	$160 μ C$

40.

Surface charge with charge density

40 μ C / m^{2}

is located at z = 1.5m. What will be the flux coming out of a cube centered at origin and with one of its side measuring 2m ?

(a)	0
(b)	$10 μ C$
(c)	$80 μ C$
(d)	$160 μ C$

Showing 31 to 40 out of 96 Questions