MCQs of Static Electric Fields (Electromagnetics Field - 3140912)

Electromagnetics Field (3140912) MCQs

MCQs of Static Electric Fields

Showing 1 to 10 out of 96 Questions

The force between two point charge depends on _________ .

(a)	value of each point charge
(b)	distance between point charge
(c)	medium where charge is present
(d)	All of the above

Point charge

Q_{1} = 300 μ C

located at (1,-1,-3) experiences force of

F = 8 a_{x} - 8 a_{y} + 4 a_{z}

due to another point charge

Q_{2}

present at (3,-3,-2). Find

Q_{2}

. Assume free space.

(a)	$40 μ C$
(b)	$- 40 μ C$
(c)	$4 μ C$
(d)	$- 4 μ C$

Point charge

Q_{1} = 0.5 μ C

is present at origin and

Q_{2} = 1 μ C

is present at (0,3,4), the direction of the force on

Q_{2}

will be along _____________ .

(a)	$0.6 a_{x} + 0.8 a_{y}$
(b)	$- 0.6 a_{x} - 0.8 a_{y}$
(c)	$0.6 a_{y} + 0.8 a_{z}$
(d)	$- 0.6 a_{y} - 0.8 a_{z}$

Two equal charge of value

0.75 n C

are present in free space separated by distance of 4 cm. Find the magnitude of force acting between them.

(a)	$3.2 μ N$
(b)	$- 3.2 μ N$
(c)	$0.032 n N$
(d)	$- 0.032 n N$

The direction of the force on

100 μ C

charge present at (0,0,3) due to two like charges of

20 μ C

present on y axis at

\pm 4 m

will be along _________ .

(a)	$0.8 a_{y} + 0.6 a_{z}$
(b)	$- 0.8 a_{y} + 0.6 a_{z}$
(c)	$a_{y}$
(d)	$a_{z}$

A cubical region bounded by

0 \leq x, y, z \leq 2

contains charge with charge density

400 x y z C / m^{3}

. Find the total charge present inside the cube.

(a)	$320 C$
(b)	$320 μ C$
(c)	$480 C$
(d)	$480 μ C$

Four 40 nC point charge are located at A(1,0,0), B(-1,0,0), C(0,1,0) and D(0,-1,0) in free space. The total force on charge at A will be _____________.

(a)	$24.6 a_{x} μ N$
(b)	$- 24.6 a_{x} μ N$
(c)	$- 13.76 a_{x} μ N$
(d)	$13.76 a_{x} μ N$

The force at point P because of identical point charge located at P(1,0,0), Q(-1,0,0), R(0,1,0) and S(0,-1,0) in free space will have ____________.

(a)	only x - component
(b)	only y-component
(c)	both x and y component
(d)	x, y and z-components

Coulomb law is employed in study of __________.

(a)	Electromagnetics
(b)	Maxwell theory
(c)	Magnetostatics
(d)	Electrostatics

10.

There are two point charge

Q_{1}

and

Q_{2}

in a free space with force

F_{1}

and

F_{2}

acting on each, then the forces will be related as ___________.

(a)	$F_{1} = F_{2}$
(b)	$F_{1} = - F_{2}$
(c)	$F_{1} = F_{2} = 0$
(d)	Insufficient data

Showing 1 to 10 out of 96 Questions