MCQs of Static Electric Fields (Electromagnetics Field - 3140912)

Electromagnetics Field (3140912) MCQs

MCQs of Static Electric Fields

Showing 91 to 96 out of 96 Questions

91.

Electric dipole consist of point charges of

3 μ C

and

- 3 μ C

located at (0,0,1 mm) and (0,0,-1 mm) respectively the dipole moment can be expressed as _______ .

(a)	$- 6 a_{z} n C \cdot m$
(b)	$6 a_{z} n C \cdot m$
(c)	$- 9 a_{z} n C \cdot m$
(d)	$9 a_{z} n C \cdot m$

92.

At a point in an electric filed the magnitude of electric field intensity is 4 V/m and the magnitude of electric flux density is 6

C / m^{2}

, the value of electrostatic energy will be ___________ .

(a)	12 J
(b)	24 J
(c)	36 J
(d)	48 J

93.

Three point charges of -1 nC, 4 nC and 3 nC are located at (0,0,0), (0,0,1) and (1,0,0) respectively, the electrostatic energy in the system will be _______.

(a)	11.36 nJ
(b)	13.36 nJ
(c)	15.36 nJ
(d)	17.36 nJ

94.

Electric filed intensity is defined as

E = 2 x^{2} a_{x}

, find energy stored in a volume defined by

0 \leq x, y, z \leq 1

(a)	$0.2 \in J$
(b)	$0.3 \in J$
(c)	$0.4 \in J$
(d)	$0.5 \in J$

95.

For electrostatic fields energy density is defined as ___________.

(a)	Energy per unit charge
(b)	Energy per unit area
(c)	Energy per unit volume
(d)	Energy per volt

96.

Potential energy of a test charge, when moved from a lower potential point to a higher potential point.

(a)	Remains the same
(b)	Increases
(c)	Decreases
(d)	Becomes zero

Showing 91 to 96 out of 96 Questions