Explore topic-wise MCQs in Electromagnetic Theory.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.

1.

If V = 2x2y + 20z – 4/(x2 + y2), find the density at A(6, -2.5, 3) in nC/m2.

A. 0.531i – 0.6373j – 0.177k
B. 0.6373i – 0.177j -0.531k
C. 0.177i – 0.6373j – 0.531k
D. 0.531i – 0.177j – 0.6373k
Answer» B. 0.6373i – 0.177j -0.531k
Discussion
2.

If the potential is given by, V = 10sin θ cosφ/r, find the density at the point P(2, π/2, 0)(in 10-12 units)

A. 13.25
B. 22.13
C. 26.31
D. 31.52
Answer» C. 26.31
Discussion
3.

Find the potential of the function V = 60cos θ/r at the point P(3, 60, 25).

A. 20
B. 10
C. 30
D. 60
Answer» C. 30
Discussion
4.

If potential V = 20/(x2 + y2). The electric field intensity for V is40(x i + y j)/(x2 + y2)2. State True/False.

A. True
B. False
Answer» B. False
Discussion
5.

Find the electric flux density surrounding a material with field intensity of 2xyz placed in transformer oil ( εr = 2.2) at the point P(1,2,3) is(in 10-10 units)

A. 2.1
B. 2.33
C. 2.5
D. 2.77
Answer» D. 2.77
Discussion
6.

IF_THE_POTENTIAL_IS_GIVEN_BY,_V_=_10SIN_‚ÂÀ√≠‚ÄÖ√†√®_COS‚ÂÀ√¨‚ÀÖ√∫/R,_FIND_THE_DENSITY_AT_THE_POINT_P(2,_‚ÂÀ√¨‚ÀÖ√Ë/2,_0)?$#

A.
B. 13.25
C. 22.13
D. 26.31
Answer» C. 22.13
Discussion
7.

If_V_=_2x2y_+_20z_–_4/(x2_+_y2),_find_the_density_at_A(6,_-2.5,_3)_in_nC/m2.$#

A. 0.531i – 0.6373j – 0.177k
B. 0.6373i – 0.177j -0.531k
C. 0.177i – 0.6373j – 0.531k
D. 0.531i – 0.177j – 0.6373k
Answer» B. 0.6373i ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.177j -0.531k
Discussion
8.

Find the work done moving a charge 2C having potential V = 24volts i?

A. 96
B. 24
C. 36
D. 48
Answer» E.
Discussion
9.

Find the potential of the function V = 60cos θ/r at the point P(3, 60, 25).$

A. 20
B. 10
C. 30
D. 60
Answer» C. 30
Discussion
10.

If potential V = 20/(x2 + y2). The electric field intensity for V is

A. /(x<sup>2</sup> + y<sup>2</sup>)<sup>2</sup>. State True/False.
B. True
C. False
Answer» B. True
Discussion
11.

Find the electric flux density surrounding a material with field intensity of 2xyz placed in transformer oil ( εr = 2.2) at the point P(1,2,3) is$

A.
B. 2.1
C. 2.33
D. 2.5
Answer» D. 2.5
Discussion
12.

Find the potential at a point (4, 3, -6) for the function V = 2x2y + 5z.

A. 96
B. 66
C. 30
D. -66
Answer» C. 30
Discussion
13.

Find the electric potential for an electric field 3units at a distance of 2m.

A. 9
B. 4
C. 6
D. 3/2
Answer» D. 3/2
Discussion
14.

The electric field intensity is the negative gradient of the electric potential. State True/False.

A. True
B. False
Answer» B. False
Discussion
15.

The electric flux density and electric field intensity have which of the following relation?

A. Linear
B. Nonlinear
C. Inversely linear
D. Inversely nonlinear
Answer» B. Nonlinear
Discussion