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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Test  >  Basic Electrical Technology  >  Test: Energy Stored in an Inductor - Electrical Engineering (EE) MCQ

Energy Stored in an Inductor - Free MCQ Practice Test with solutions, GATE


MCQ Practice Test & Solutions: Test: Energy Stored in an Inductor (10 Questions)

You can prepare effectively for Electrical Engineering (EE) Basic Electrical Technology with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Energy Stored in an Inductor". These 10 questions have been designed by the experts with the latest curriculum of Electrical Engineering (EE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Energy Stored in an Inductor - Question 1
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If the current in a coil having a constant inductance of L henrys grows at a uniform rate, what is the value of the average current?

Detailed Solution: Question 1

The average current is the average of the current which flows in the inductor. Hence it is I/2.

Test: Energy Stored in an Inductor - Question 2
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What is the power in the magnetic field if the current in a coil has a constant inductance of L henrys grows at a uniform rate?

Detailed Solution: Question 2

The average current is I/2. The e.m.f. induced in the coil is LI/t V. Power= VI, hence the average power= I/2*LI/t.

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Test: Energy Stored in an Inductor - Question 3
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 What is the energy stored in the magnetic field if the current in a coil has a constant inductance of L henrys grows at a uniform rate?

Detailed Solution: Question 3

The average current is I/2. The e.m.f. induced in the coil is LI/t V. Power= VI, hence the average power= I/2*LI/t. The total energy stored= power*t= LI2/2.

Test: Energy Stored in an Inductor - Question 4
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Find the average current in an inductor if the total current in the inductor is 26A.

Detailed Solution: Question 4

Average current= I/2.
Substituting the value of I from the equation, average current= 13A.

Test: Energy Stored in an Inductor - Question 5
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Calculate the emf induced in an inductor if the inductance is 10H and the current is 2A in 4s?

Detailed Solution: Question 5

The expression for emf in an inductive circuit is:
emf = LdI/dt
Substituting the values from the given question, we get emf = 5V.

Test: Energy Stored in an Inductor - Question 6
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 Calculate the value of stored energy in an inductor if the value of inductance is 20H and 4A of current flows through it.

Detailed Solution: Question 6

The expression for energy in an inductor is:
W= LI2/2t
Substituting the values from the given question, we get W= 160J.

Test: Energy Stored in an Inductor - Question 7
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Calculate the emf induced in an inductor if the inductance is 10H and the current is 2A in 4s.

Detailed Solution: Question 7

The expression for emf in an inductive circuit is:
emf= LI/2t
Substituting the values from the given question, we get emf= 2.5V.

Test: Energy Stored in an Inductor - Question 8
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 Calculate the value of emf in an inductor if the value of inductance is 15H and an average current of 5A flows through it in 10s.

Detailed Solution: Question 8

The expression for emf in an inductive circuit is:
emf= LI/2t, where I/2 is the average current.
Substituting the values from the given question, we get emf= 2.5V.

Test: Energy Stored in an Inductor - Question 9
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Calculate the current in an inductor if the energy stored is 160J and the inductance is 20H.

Detailed Solution: Question 9

The expression for energy in an inductor is:
W= LI2/2t
Substituting the values from the given question, we get I=4A.

Test: Energy Stored in an Inductor - Question 10
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Find the time taken for the current in an inductor to change to 2A from 0A if the power in the inductor is 5W. The value of inductance is 10H.

Detailed Solution: Question 10

The expression for power in an inductive circuit is:
P= LI2/2
Substituting the values from the given question, we get t=4s.

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About this Electrical Engineering (EE) Practice Test

This test contains 10 MCQs on Energy Stored in an Inductor with detailed solutions for each question. It is part of the Basic Electrical Technology course on EduRev, designed to align with the current Electrical Engineering (EE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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