Explore topic-wise MCQs in Electromagnetic Theory.

This section includes 10 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.

Which type of flux will increase the inductance?

A. Series aiding
B. Series opposing
C. Shunt aiding
D. Shunt opposing
Answer» B. Series opposing
Discussion
2.

Find the flux density of a conductor in the square of the centre of the loop having current 3.14A and radius is 1.414m in air.

A. 8π x 10-7
B. 4π x 10-7
C. 6π x 10-7
D. 2π x 10-7
Answer» B. 4π x 10-7
Discussion
3.

Identify the devices that do not use electromagnetic energy.

A. Television
B. Washing machine
C. Microwave oven
D. Mobile phones
Answer» C. Microwave oven
Discussion
4.

Electromagnetic waves are longitudinal in nature. State True/False.

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

Inductance is present in semiconductor. State True/False.

A. True
B. False
Answer» C.
Discussion
6.

When the electric field travels in +x direction and the EM wave is travelling the –y direction, then the magnetic field will be travelling in which direction?

A. +z direction
B. –z direction
C. Either +z or –z direction
D. Does not travel
Answer» D. Does not travel
Discussion
7.

Find the magnetic flux density when the vector potential is a position vector.

A. 1
B. 0
C. -1
D. ∞
Answer» C. -1
Discussion
8.

Find the magnetic field intensity of a material with flux density of 24 units in air(in 106 order)

A. 19.09
B. 21
C. 25
D. 26.78
Answer» B. 21
Discussion
9.

Find the total flux in a material of flux density 15 units in an area of 24 units.

A. 3.6
B. 7.2
C. 9.6
D. 5.4
Answer» B. 7.2
Discussion
10.

In a magnetic material, always there exist magnetic dipoles as well as monopoles. State True/False.

A. True
B. False
Answer» C.
Discussion