All Courses
Get the App Signup / Login
Sign in Open App
Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  Test: Faraday Law, EMF & Lenz Law - Electrical Engineering (EE) MCQ

Test: Faraday Law, EMF & Lenz Law - Electrical Engineering (EE) MCQ


Test Description

10 Questions MCQ Test - Test: Faraday Law, EMF & Lenz Law

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

For time varying currents, the field or waves will be

Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 1

Answer: c
Explanation: For stationary charges, the field is electrostatic. For steady currents, the field is magneto static. But for time varying currents, the field or waves will be electromagnetic.

Test: Faraday Law, EMF & Lenz Law - Question 2
Save

According to Faraday’s law, EMF stands for

Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 2

Answer: d
Explanation: The force in any closed circuit due to the change in the flux linkage of the circuit is called as electromotive force EMF. This phenomenon is called as Faraday’s law.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Faraday Law, EMF & Lenz Law - Question 3
Save

Calculate the emf when the flux is given by 3sin t + 5cos t

Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 3

Answer: b
Explanation: The electromotive force is given by Vemf = -dλ/dt. Thus Vemf = -dλ/dt = -(3cos t – 5sin t) = -3cos t + 5sin t.

Test: Faraday Law, EMF & Lenz Law - Question 4
Save

The induced voltage will oppose the flux producing it. State True/False. 
Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 4

Answer: a
Explanation: According to Lenz law, the induced voltage acts in such a way that it opposes the flux producing it. This is indicated by a negative sign.

Test: Faraday Law, EMF & Lenz Law - Question 5
Save

Calculate the emf when a coil of 100 turns is subjected to a flux rate of 0.3 tesla/sec.
Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 5

Answer: c
Explanation: The induced emf is given by Vemf = -dλ/dt = -Ndψ/dt. Thus emf will be -100 x 0.3 = -30 units.

Test: Faraday Law, EMF & Lenz Law - Question 6
Save

Find the displacement current when the flux density is given by t3 at 2 seconds. 
Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 6

Answer: c
Explanation: The displacement current is given by Jd = dD/dt. Thus Jd = 3t2. At time t = 2, we get Jd = 3(2)2= 12A.

Test: Faraday Law, EMF & Lenz Law - Question 7
Save

Find the force due to a current element of length 2cm and flux density of 12 tesla. The current through the element will be 5A.
Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 7

Answer: b
Explanation: The force due to a current element is given by F = BI x L. Thus F = 12 x 5 x 0.02 = 1.2 units.

Test: Faraday Law, EMF & Lenz Law - Question 8
Save

Which of the following statements is true?
Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 8

Answer: a
Explanation: The electric field is the cross product of the velocity and the magnetic field intensity. This is given by Lorentz equation

Test: Faraday Law, EMF & Lenz Law - Question 9
Save

The time varying electric field E is conservative. State True/False. 
Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 9

Answer: b
Explanation: The time varying electric field E(t) is not a closed path. Thus the curl will be non-zero. This implies E(t) is not conservative and the statement is false.

Test: Faraday Law, EMF & Lenz Law - Question 10
Save

When the conduction current density and displacement current density are same, the dissipation factor will be
Detailed Solution for Test: Faraday Law, EMF & Lenz Law - Question 10

Answer: d
Explanation: Dissipation factor refers to the tangent of loss angle. It is the ratio of conduction current density to displacement current density. When both are same, the loss tangent or the dissipation factor will be unity.

Information about Test: Faraday Law, EMF & Lenz Law Page
In this test you can find the Exam questions for Test: Faraday Law, EMF & Lenz Law solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Faraday Law, EMF & Lenz Law, EduRev gives you an ample number of Online tests for practice

Top Courses for Electrical Engineering (EE)

Download as PDF

Top Courses for Electrical Engineering (EE)

Important Questions for Faraday Law, EMF & Lenz Law

Find all the important questions for Faraday Law, EMF & Lenz Law at EduRev.Get fully prepared for Faraday Law, EMF & Lenz Law with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Faraday Law, EMF & Lenz Law syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Faraday Law, EMF & Lenz Law resources.

Faraday Law, EMF & Lenz Law MCQs with Answers

Prepare for the Faraday Law, EMF & Lenz Law within the Electrical Engineering (EE) exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Faraday Law, EMF & Lenz Law

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Faraday Law, EMF & Lenz Law with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup