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Mcqs

Electromagnetic Theory Mcqs

Our 1000+ Electromagnetic Theory MCQs (Multiple Choice Questions and Answers) focus on all areas of Electromagnetic Theory covering 100+ topics. These topics are chosen from a collection of the most authoritative and best reference books on Electromagnetic Theory. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate the Electromagnetic Theory subject comprehensively. This way of systematic learning will prepare anyone easily for Electromagnetic Theory exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

 

Electromagnetic Theory Multiple Choice Questions Highlights

  • 1000+ Multiple Choice Questions & Answers (MCQs) in Electromagnetic Theory with a detailed explanation of every question.
  • These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks, and match the following style statements.
  • These MCQs also cover numerical as well as diagram-oriented MCQs.
  • These MCQs are organized chapterwise and each Chapter is further organized topicwise.
  • Every MCQ set focuses on a specific topic of a given Chapter in Electromagnetic Theory Subject.

 

Who should Practice Electromagnetic Theory MCQs?

  • Students who are preparing for college tests and exams such as mid-term tests and semester tests on Electromagnetic Theory.
  • Students who are preparing for Online/Offline Tests/Contests in Electromagnetic Theory.
  • Students who wish to sharpen their knowledge of Electromagnetic Theory Subject.
  • Anyone preparing for Aptitude test in Electromagnetic Theory.
  • Anyone preparing for interviews (campus/off-campus interviews, walk-in interviews, and company interviews).
  • Anyone preparing for entrance examinations and other competitive examinations.
  • All - Experienced, Freshers and College / School Students.
Latest Popular
Q:

The coaxial cable are used in

A) Telephone cables transmission B) Power transmission
C) Television signal transmission D) Short wave transmission
 
Answer & Explanation Answer: C) Television signal transmission

Explanation: Practically, the coaxial cables are employed in the transmission of the television signals from the dish antenna to the transponder.

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

523
Q:

The Bohr magneton is given by

A) eh/2m B) eh/2?m
C) eh/4m D) eh/4?m
 
Answer & Explanation Answer: D) eh/4?m

Explanation: In atomic physics, the Bohr magneton (symbol ?B) is a physical constant and the natural unit for expressing the magnetic moment of an electron caused by either its orbital or spin angular momentum. It is given by eh/4?m, where h is the Planck’s constant, e is the charge of the electron and m is the mass of the electron.

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

392
Q:

The cross product of the vectors 3i + 4j – 5k and –i + j – 2k is,

A) 3i – 11j + 7k B) -3i + 11j + 7k
C) -3i – 11j – 7k D) -3i + 11j – 7k
 
Answer & Explanation Answer: B) -3i + 11j + 7k

Explanation: Cross product of two vectors is, A X B = (a2*b3 – b2*a3)i – (a1*b3 – b1*a3)j + (a1*b2 – b1*a2)k. Using the formula, the answer can be calculated.

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

344
Q:

Find the electric field applied on a system with electrons having a velocity 5m/s subjected to a magnetic flux of 3.6 units.

A) 15 B) 18
C) 1.38 D) 0.72
 
Answer & Explanation Answer: B) 18

Explanation: The electric field intensity is the product of the velocity and the magnetic flux density. Thus E = v x B, on substituting v = 5 and B = 3.6, we get E = 5 x 3.6 = 18 units.

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

319
Q:

Find the electric field intensity of two charges 2C and -1C separated by a distance 1m in air.

A) 18 X 10? B) 9 X 10?
C) 36 X 10? D) -18 X 10?
 
Answer & Explanation Answer: B) 9 X 10?

Explanation: Not available for this question

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

302
Q:

A point charge 0.4nC is located at (2, 3, 3). Find the potential differences between (2, 3, 3)m and (-2, 3, 3)m due to the charge.

A) 2.5 B) 2.6
C) 2.7 D) 2.8
 
Answer & Explanation Answer: C) 2.7

Explanation: Vab = (Q/4??o)(1/rA) + (1/rB), where rA and rB are position vectors rA = 1m and rB = 4m. Thus Vab = 2.7 volts.

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

273
Q:

The angular separation between the vectors A = 4i + 3j + 5k and B = i – 2j + 2k is (in degrees)

A) 65.8 B) 66.8
C) 67.8 D) 68.8
 
Answer & Explanation Answer: C) 67.8

Explanation: Not available for this question

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

266
Q:

Find the force between two charges when they are brought in contact and separated by 4cm apart, charges are 2nC and -1nC, in ?N.

A) 1.44 B) 2.44
C) 1.404 D) 2.404
 
Answer & Explanation Answer: C) 1.404

Explanation: Before the charges are brought into contact, F = 11.234 ?N.
After charges are brought into contact and then separated, charge on each sphere is, (q1 + q2)/2 = 0.5nC
On calculating the force with q1 = q2 = 0.5nC, F = 1.404?N.

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Category: Electronics & Electrical MCQs
Sub Category: Electromagnetic Theory Mcqs

265