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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  GATE Electrical Engineering (EE) Mock Test Series 2025  >  Test: Maxwell Law in Time Varying Fields - Electrical Engineering (EE) MCQ

Test: Maxwell Law in Time Varying Fields - Electrical Engineering (EE) MCQ


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10 Questions MCQ Test GATE Electrical Engineering (EE) Mock Test Series 2025 - Test: Maxwell Law in Time Varying Fields

Test: Maxwell Law in Time Varying Fields for Electrical Engineering (EE) 2024 is part of GATE Electrical Engineering (EE) Mock Test Series 2025 preparation. The Test: Maxwell Law in Time Varying Fields questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Maxwell Law in Time Varying Fields MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Maxwell Law in Time Varying Fields below.
Solutions of Test: Maxwell Law in Time Varying Fields questions in English are available as part of our GATE Electrical Engineering (EE) Mock Test Series 2025 for Electrical Engineering (EE) & Test: Maxwell Law in Time Varying Fields solutions in Hindi for GATE Electrical Engineering (EE) Mock Test Series 2025 course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: Maxwell Law in Time Varying Fields | 10 questions in 10 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study GATE Electrical Engineering (EE) Mock Test Series 2025 for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: Maxwell Law in Time Varying Fields - Question 1
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Find the curl of E when B is given as 15t.

Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 1

Answer: b
Explanation: From Maxwell first law, we get Curl of E as the negative derivative of B with respect to time. Thus Curl(E) = -dB/dt. On substituting B= 15t and differentiating, Curl(E) = -15 units.

Test: Maxwell Law in Time Varying Fields - Question 2
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The charge build up in a capacitor is due to

Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 2

Answer: b
Explanation: The capacitor consists of a dielectric placed between two conducting plates, subjected to a field. The current due to a dielectric is always due to the displacement current density.

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Test: Maxwell Law in Time Varying Fields - Question 3
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The surface integral of which parameter is zero?

Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 3

Answer: c
Explanation: The divergence of the magnetic flux density is always zero. By Stokes theorem, the surface integral of B is same as the volume integral of the divergence of B. Thus the surface integral of B is also zero.

Test: Maxwell Law in Time Varying Fields - Question 4
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Harmonic electromagnetic fields refer to fields varying sinusoidally with respect to time. State True/False. 
Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 4

Answer: a
Explanation: Fields that varying sinusoidally with respect to time are called as harmonic fields. An example for harmonic fields is A sin wt.

Test: Maxwell Law in Time Varying Fields - Question 5
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When electric potential is null, then the electric field intensity will be
Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 5

Answer: d
Explanation: The electric field intensity is given by E = -Grad(V)- dA/dt, where V is the electric potential and A is the magnetic vector potential. When V is zero, then E = -dA/dt.

Test: Maxwell Law in Time Varying Fields - Question 6
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The gradient of the magnetic vector potential can be expressed as
Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 6

Answer: a
Explanation: The gradient of A is the ratio of the negative gradient of electric potential to the speed of light c. We can write c = 1/√(με). Thus grad(A) = -με dV/dt is the required expression.

Test: Maxwell Law in Time Varying Fields - Question 7
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Find the time constant of a capacitor with capacitance of 2 microfarad having an internal resistance of 4 megaohm.
Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 7

Answer: c
Explanation: The time constant of capacitor is given by T = RC, where R = 4×106 and C = 2×10-6. Thus T = 4×106 x2x10-6 = 8 seconds.

Test: Maxwell Law in Time Varying Fields - Question 8
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Which components exist in an electromagnetic wave?
Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 8

Answer: c
Explanation: In an electromagnetic wave, the electric and magnetic components coexist. They propagate perpendicular to each other and to the direction of propagation in space.

Test: Maxwell Law in Time Varying Fields - Question 9
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The propagation of the electromagnetic waves can be illustrated by
Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 9

Answer: c
Explanation: By Flemming’s rule, when the thumb and the middle finger represent the inputs (say current and field respectively), then the fore finger represents the output (force, in this case). The EM propagation can be illustrated by this rule.

Test: Maxwell Law in Time Varying Fields - Question 10
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Which one of the following laws will not contribute to the Maxwell’s equations?
Detailed Solution for Test: Maxwell Law in Time Varying Fields - Question 10

Answer: d
Explanation: The Gauss law, Faraday law and the Ampere law are directly used to find the parameters E, H, D, B. Thus it contributes to the Maxwell equations. The Curie Weiss law pertains to the property of any magnetic material. Thus it is not related to the Maxwell equation.

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