SSC first · CGL and related exams

SSC · Electromagnetism and Magnetic Circuits practice

Start with free questions. Take a timed mock. Find your weak topics and build a practice session to improve them.

SSC mock testsPrevious-year questionsTest seriesSSC CGL exam guide

Previous-year papers · timed practice

English SSC CGL Tier I papers. Free 60-minute mocks, 100 questions, 200 marks; +2 correct and −0.5 incorrect. Source: SSC response sheets preserved by SSC Portal. The marked archived keys have not been independently revalidated against final SSC keys; worked explanations are pending review. A/B/C/D correspond to source options 1/2/3/4.

Choose your next topic

These topics contain published free SSC questions. Counts reflect the selected language and paper filters. Archived papers show their source and key status above.

Englishहिन्दीAll free questionsBrowse papers by exam and year
Civil Engineering (SSC JE)

Building Materials

1456 free questions →Civil Engineering (SSC JE)

Concrete Technology and RCC

1120 free questions →Civil Engineering (SSC JE)

Construction Management

560 free questions →Civil Engineering (SSC JE)

Environmental Engineering

896 free questions →Civil Engineering (SSC JE)

Estimating, Costing and Valuation

672 free questions →Civil Engineering (SSC JE)

Fluid Mechanics and Hydraulics

1008 free questions →Civil Engineering (SSC JE)

Hydrology and Irrigation

896 free questions →Civil Engineering (SSC JE)

Soil Mechanics and Foundations

896 free questions →Civil Engineering (SSC JE)

Steel Structures

560 free questions →Civil Engineering (SSC JE)

Strength of Materials and Structural Analysis

1568 free questions →Civil Engineering (SSC JE)

Surveying

784 free questions →Civil Engineering (SSC JE)

Transportation Engineering

784 free questions →Electrical Engineering (SSC JE)

Analog and Digital Electronics

896 free questions →Electrical Engineering (SSC JE)

Basic Electrical Engineering

1344 free questions →Electrical Engineering (SSC JE)

Circuit Theory and Networks

1568 free questions →Electrical Engineering (SSC JE)

Control Systems

672 free questions →Electrical Engineering (SSC JE)

Electrical Machines

2016 free questions →Electrical Engineering (SSC JE)

Electrical Measurements and Instruments

1120 free questions →Electrical Engineering (SSC JE)

Electromagnetism and Magnetic Circuits

448 free questions →Electrical Engineering (SSC JE)

Power Electronics and Drives

672 free questions →Electrical Engineering (SSC JE)

Power Systems

1568 free questions →Electrical Engineering (SSC JE)

Signals and Systems

448 free questions →Electrical Engineering (SSC JE)

Utilization of Electrical Energy

448 free questions →English Language

Grammar and Vocabulary

2028 free questions →English Language

SSC PYQ - English Language

469 free questions →English Language

Vocabulary

13736 free questions →General Awareness

Environment and Ecology

330 free questions →General Awareness

General Science

2983 free questions →General Awareness

Geography

1921 free questions →General Awareness

History and Culture

5348 free questions →General Awareness

Indian Economy

1313 free questions →General Awareness

Indian Polity and Governance

3105 free questions →General Awareness

SSC PYQ - General Awareness

343 free questions →General Awareness

Science and Technology

495 free questions →General Awareness

Static GK

9055 free questions →Mechanical Engineering (SSC JE)

Engineering Mechanics

448 free questions →Mechanical Engineering (SSC JE)

Fluid Mechanics and Machines

1568 free questions →Mechanical Engineering (SSC JE)

Heat Transfer

672 free questions →Mechanical Engineering (SSC JE)

IC Engines

672 free questions →Mechanical Engineering (SSC JE)

Industrial Engineering, Metrology and Materials

448 free questions →Mechanical Engineering (SSC JE)

Machine Design

896 free questions →Mechanical Engineering (SSC JE)

Manufacturing and Production Engineering

1344 free questions →Mechanical Engineering (SSC JE)

Power Plant Engineering

896 free questions →Mechanical Engineering (SSC JE)

Refrigeration and Air Conditioning

672 free questions →Mechanical Engineering (SSC JE)

Strength of Materials

1120 free questions →Mechanical Engineering (SSC JE)

Theory of Machines

1120 free questions →Mechanical Engineering (SSC JE)

Thermodynamics

1344 free questions →Quantitative Aptitude

Algebra

2879 free questions →Quantitative Aptitude

Arithmetic

12630 free questions →Quantitative Aptitude

Averages

1748 free questions →Quantitative Aptitude

Data Interpretation

1225 free questions →Quantitative Aptitude

Interest

3311 free questions →Quantitative Aptitude

Percentage

2781 free questions →Quantitative Aptitude

Profit and Loss

3224 free questions →Quantitative Aptitude

Ratio and Proportion

2202 free questions →Quantitative Aptitude

SSC PYQ - Quantitative Aptitude

295 free questions →Reasoning Ability

Analogy

666 free questions →Reasoning Ability

Blood Relations

499 free questions →Reasoning Ability

Calendar and Clock

498 free questions →Reasoning Ability

Classification

665 free questions →Reasoning Ability

Coding-Decoding

666 free questions →Reasoning Ability

Direction Sense

499 free questions →Reasoning Ability

Logical Reasoning

21002 free questions →Reasoning Ability

Mathematical Operations

499 free questions →Reasoning Ability

Number Series

11308 free questions →Reasoning Ability

Number and Letter Series

833 free questions →Reasoning Ability

Ranking and Order

333 free questions →Reasoning Ability

SSC PYQ - Reasoning Ability

356 free questions →Reasoning Ability

Statement and Conclusion

333 free questions →Reasoning Ability

Syllogism

499 free questions →

Try a free practice session

No account needed. This session stays in this browser tab; sign in for timed tests, bookmarks and saved performance.

Question 1 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 100 turns links a flux that changes by 0.02 Wb in 0.1 s. The induced emf is
Choose your answer for question 1
Answer and explanation

Correct answer: B

e = N dΦ/dt = 100 × 0.02 / 0.1 = 20 V.

Question 2 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
Lenz’s law is a consequence of the law of conservation of
Choose your answer for question 2
Answer and explanation

Correct answer: D

The induced current opposes the change causing it. If it aided the change, energy would be created from nothing.

Question 3 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
The SI unit of magnetic flux density is
Choose your answer for question 3
Answer and explanation

Correct answer: D

One tesla is one weber per square metre.

Question 4 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
The reluctance of a magnetic circuit is analogous to which quantity in an electric circuit?
Choose your answer for question 4
Answer and explanation

Correct answer: D

S = l/(μA) is analogous to R = l/(σA). MMF is analogous to emf and flux is analogous to current.

Question 5 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 200 turns is wound on a core whose reluctance is 4 × 10⁵ AT/Wb. Its self-inductance is
Choose your answer for question 5
Answer and explanation

Correct answer: D

L = N²/S = 200² / (4 × 10⁵) = 40 000 / 400 000 = 0.1 H.

Question 6 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A conductor 0.4 m long carries 10 A at right angles to a field of 0.5 T. The force on it is
Choose your answer for question 6
Answer and explanation

Correct answer: B

F = B I L = 0.5 × 10 × 0.4 = 2 N.

Question 7 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
The energy lost per cycle per unit volume due to hysteresis is equal to
Choose your answer for question 7
Answer and explanation

Correct answer: B

The area of the loop (in J/m³) is the energy dissipated as the material is taken once through the cycle.

Question 8 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
The eddy current loss in a core varies as
Choose your answer for question 8
Answer and explanation

Correct answer: D

Pe ∝ f² Bm² t². Thin laminations are used to reduce this loss.

Question 9 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A conductor 2 m long carries 10 A at right angles to a uniform field of 0.2 T. The force on it is
Choose your answer for question 9
Answer and explanation

Correct answer: B

F = B I L = 0.2 × 10 × 2 = 4 N.

Question 10 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A conductor 0.2 m long carries 50 A at right angles to a uniform field of 0.5 T. The force on it is
Choose your answer for question 10
Answer and explanation

Correct answer: A

F = B I L = 0.5 × 50 × 0.2 = 5 N.

Question 11 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 100 turns links a flux that changes by 0.002 Wb in 0.5 s. The average induced emf is
Choose your answer for question 11
Answer and explanation

Correct answer: B

e = N dΦ/dt = 100 × 0.002 / 0.5 = 0.4 V.

Question 12 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A conductor 0.5 m long carries 10 A at right angles to a uniform field of 1 T. The force on it is
Choose your answer for question 12
Answer and explanation

Correct answer: A

F = B I L = 1 × 10 × 0.5 = 5 N.

Question 13 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A magnetic circuit has a mean length of 1 m, a cross-sectional area of 4 cm² and a relative permeability of 4000. Its reluctance is about
Choose your answer for question 13
Answer and explanation

Correct answer: A

S = l/(μ0 μr A) = 1 / (4π×10⁻⁷ × 4000 × 4×10⁻⁴) = 497000 AT/Wb.

Question 14 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 200 turns carries 1 A in a ring of mean length 1 m, cross-section 10 cm² and relative permeability 2000. The flux in the core is about
Choose your answer for question 14
Answer and explanation

Correct answer: D

S = 398000 AT/Wb. Φ = NI/S = 200/398000 = 0.503 mWb.

Question 15 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
The hysteresis loss in a core is 40 W at 40 Hz for a given maximum flux density. At 100 Hz with the same flux density, the hysteresis loss becomes about
Choose your answer for question 15
Answer and explanation

Correct answer: D

Hysteresis loss ∝ f. P2 = 40 × 100/40 = 100 W.

Question 16 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 500 turns is wound on a core of reluctance 10000 AT/Wb. Its self-inductance is
Choose your answer for question 16
Answer and explanation

Correct answer: B

L = N²/S = 500² / 10000 = 25 H.

Question 17 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 200 turns links a flux that changes by 0.02 Wb in 0.05 s. The average induced emf is
Choose your answer for question 17
Answer and explanation

Correct answer: D

e = N dΦ/dt = 200 × 0.02 / 0.05 = 80 V.

Question 18 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 50 turns links a flux that changes by 0.002 Wb in 0.05 s. The average induced emf is
Choose your answer for question 18
Answer and explanation

Correct answer: D

e = N dΦ/dt = 50 × 0.002 / 0.05 = 2 V.

Question 19 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 200 turns links a flux that changes by 0.002 Wb in 0.1 s. The average induced emf is
Choose your answer for question 19
Answer and explanation

Correct answer: A

e = N dΦ/dt = 200 × 0.002 / 0.1 = 4 V.

Question 20 · Electrical Engineering (SSC JE) · Electromagnetism and Magnetic Circuits
A coil of 500 turns links a flux that changes by 0.02 Wb in 0.01 s. The average induced emf is
Choose your answer for question 20
Answer and explanation

Correct answer: D

e = N dΦ/dt = 500 × 0.02 / 0.01 = 1000 V.

Answer the 20 questions, then check your score.

Take a timed topic mastery test