Electromagnetic Field Theory MCQ Questions & Answers

Learn Electromagnetic Field Theory MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Electromagnetic Field Theory MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-3 section-4

Each section contains 100 MCQs on Electromagnetic Field Theory .

A conductor 4 m long lies along x-axis with a current of 10.0 A in the $${\hat i}$$ direction. The force on this conductor due to a magnetic field $$B = 0.05\hat kT$$ is

A) $$2.0\hat jN$$ B) $$0.2\hat jN$$ C) $$ - 0.2\hat jN$$ D) $$ - 2.0\hat jN$$

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Answer & Solution

Answer: Option D

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The value of $$\oint {D\ell } $$ along a circle of radius 2 unit is

A) zero B) 2π C) 4π D) 8π

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Answer & Solution

Answer: Option A

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Which of the following is not Maxwell's equation for static electromagnetic field in isotropic and homogenous medium?

A) ∇²A = µJ B) ∇B = 0 C) ∇ × D = 0 D) ∇ × H = J

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Answer & Solution

Answer: Option A

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A copper rod of length L is rotated about one end perpendicular to the uniform magnetic field B with constant angular velocity ω. The induced emf between the two end is

A) 2BωL² B) BωL² C) $$\frac{1}{2}$$BLω² D) $$\frac{1}{4}$$BωL²

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Answer & Solution

Answer: Option C

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Consider a closed surface S surrounding a volume V. If \[\overrightarrow r \] is the position vector of a point inside S, with \[{\hat n}\] the unit normal on s, the value of the integral \[\mathop{{\int\!\!\!\!\!\int}\mkern-21mu \bigcirc}\limits_S {5\overrightarrow r .\hat ndS} \] is

A) 3 V B) 5 V C) 10 V D) 15 V

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Answer & Solution

Answer: Option D

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Which of the following represents Maxwell's divergence equation for static electric field?

A) ∇.B = 0 B) ∇ × H = 0 C) ∇.B = µ D) ∇ × H = µ

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Answer & Solution

Answer: Option B

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The depth of penetration is the depth in which electromagnetic wave has been attenuated to

A) e of the original value B) $$\frac{1}{{\text{e}}}$$ of the original value C) 50% of the original value D) 100% of the original value

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Answer & Solution

Answer: Option B

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Poisson's equation for inhomogeneous medium is:

A) ∇²V = -ρ B) ∇.(∇V) = -ρ C) ∇²(V) = -ρ D) None of these

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Answer & Solution

Answer: Option D

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A Geostationary satellite completes one orbit in

A) One hour B) 5 hours C) 24 hours D) 28 days

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Answer & Solution

Answer: Option C

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Electromagnetic Field Theory MCQ Questions & Answers | ECE