Explore Exams
Test Series
Live Tests
Prev. Papers
Quizzes
Live Quizzes
Current Affairs
News
Prepp+
GamesLogin / Register
All Exams Test series for 1 year @ ₹349 only

List of Top Electromagnetic Theory Questions

Looking for a one-stop solution to attempt the previous year’s Questions and and other MCQ questions specially designed for the all-government exam? Then you are at the right destination. Prepp provides MCQ questions for UPSC Exams, SSC Exams, Banking Exams, Insurance Exams, Police exams, Railways exams, Teaching Exams, Defence Exams and other government exams also. If you’re preparing for exams like SBI PO, IBPS PO, SBI Clerk, IBPS Clerk, SSC CGL, SSC CHSL, NDA, CDS, CTET, RRB Group D, RRB NTPC, RRB ALP, KVS, NVS, State TET, State PSC, UPSC CSE (IAS Exam) then Prepp is one stop destination for you.
Exam Category
Exams
Subjects
Topics
Electromagnetic Theory
Q1)

If the strength of the current in a straight wire is doubled, how does the magnitude of the magnetic field at a fixed distance from the wire change?

RRB JE - 2025Electromagnetic TheoryAmpere's Circuit Law
Q2)

A coil is placed in a uniform magnetic field. If the area of the coil is doubled while the magnetic field strength and orientation remain unchanged, how will the magnetic flux through the coil be affected assuming the initial magnetic flux is a non-zero finite value?

RRB JE - 2025Electromagnetic TheoryMagnetic Flux Density
Q3)

A magnetic material has a hysteresis loop area of 0.4 J for each cycle. If the material is subjected to a frequency of 40 Hz, what is the total hysteresis loss per second?

RRB JE - 2025Electromagnetic TheoryMagnetostatics
Q4)

In a graded-index Optical fiber, how is the refractive index distributed?

RRB JE - 2025Electromagnetic TheoryOptical Fiber
Q5)

What is the main reason high-frequency Carrier signals are used in modulation?

RRB JE - 2025Electromagnetic TheoryAntennas
Q6)

What allows a Radar system to detect the presence of a target?

RRB JE - 2025Electromagnetic TheoryElectromagnetic Wave Propagation
Q7)

What does the remanence (Br) indicate in a magnetic hysteresis loop?

RRB JE - 2025Electromagnetic TheoryMagnetic Flux Density
Q8)

A transmission line has a characteristic impedance of 50 ohm and is connected to a load of 100 ohm. The VSWR is _________.

RRB JE - 2025Electromagnetic TheoryAntennas
Q9)

Which cable transmits data using light signals?

RRB JE - 2025Electromagnetic TheoryOptical Fiber
Q10)

Find the gradient of the curve y = 3x 2 - 7x + 2 at the point (1, -2):

Electromagnetic TheoryVector Operators - Teaching
...