Match List I with List II:List I List II A AC generator i Presence of both L and C B Transformer ii Electromagnetic Induction C Resonance phenomenon to occur iii Quality factor D Sharpness of resonance iv Mutual Induction
Choose the correct answer from the options given below:
| List I | List II | ||
| A | AC generator | i | Presence of both L and C |
| B | Transformer | ii | Electromagnetic Induction |
| C | Resonance phenomenon to occur | iii | Quality factor |
| D | Sharpness of resonance | iv | Mutual Induction |
- A-IV, B-III, C-I, D-II
- A-II, B-IV, C-I, D-III
- A-II, B-I, C-III, D-IV
- A-IV, B-II, C-I, D-III
The Correct Option is B
Solution and Explanation
Based on fundamental electrical engineering concepts:
- An AC generator operates on Electromagnetic Induction (II).
- A Transformer operates based on Mutual Inductance (IV).
- Resonance phenomenon occurs due to Presence of both L and C (I).
- Sharpness of Resonance is linked to Quality Factor(III).
Top Questions on Magnetism and matter
- A plane electromagnetic wave is moving in free space with velocity \[ c=3\times10^{8}\ \text{m/s} \] and its electric field is given as \[ \vec E = 54\sin(kz-\omega t)\,\hat{j}\ \text{V/m}, \] where \(\hat{j}\) is the unit vector along the \(y\)-axis. The magnetic field \(\vec B\) of the wave is:
- JEE Main - 2026
- Physics
- Magnetism and matter
- A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic field due to this current is:
[A.] maximum at either end of the conductor
[B.] maximum at the axis of the conductor and minimum at the midpoint
[C.] minimum at the surface of the conductor
[D.] minimum at the axis of the conductor
[E.] same at all points in the cross-section of the conductor
Choose the correct answer from the options given below:- JEE Main - 2026
- Physics
- Magnetism and matter
- An inductor stores \(16\,\text{J}\) of magnetic field energy and dissipates \(32\,\text{W}\) of thermal energy due to its resistance when an alternating current of \(2\,\text{A}\) (rms) and frequency \(50\,\text{Hz}\) flows through it. The ratio of inductive reactance to resistance is _______. \((\pi=3.14)\) Given: \[ U=16\,\text{J},\quad P=32\,\text{W},\quad I=2\,\text{A},\quad f=50\,\text{Hz} \]
- JEE Main - 2026
- Physics
- Magnetism and matter
- If a straight current-carrying wire of linear density $0.12~\text{kg/m$ is suspended in mid-air by a uniform horizontal magnetic field of $0.5~\text{T}$ normal to the length of the wire, then the current through the wire is (Neglect earth’s magnetic field)}
- AP EAPCET - 2025
- Physics
- Magnetism and matter
- A sample of a ferromagnetic iron in the shape of a cube of side 1.0 μm contains $8.7 \times 10^{29}$ atoms per cubic meter and the magnetic dipole moment of each iron atom is $9.3 \times 10^{-29}$ Am². Then the maximum possible magnetic dipole moment (in Am²) of the sample is nearly
- AP EAPCET - 2025
- Physics
- Magnetism and matter
Questions Asked in JEE Main exam
Consider the following reaction of benzene. the percentage of oxygen is _______ %. (Nearest integer)
- JEE Main - 2026
- Organic Chemistry
- If the coefficient of \( x \) in the expansion of \[ (ax^2 + bx + c)(1 - 2x)^{26} \] is \(-56\) and the coefficients of \( x^2 \) and \( x^3 \) are both zero, then \( a + b + c \) is equal to
- JEE Main - 2026
- Binomial theorem
- The escape velocity from a spherical planet \(A\) is \(10\ \text{km/s}\). The escape velocity from another planet \(B\), whose density and radius are \(10%\) of those of planet \(A\), is _______ m/s.
- JEE Main - 2026
- Gravitation
Two p-n junction diodes \(D_1\) and \(D_2\) are connected as shown in the figure. \(A\) and \(B\) are input signals and \(C\) is the output. The given circuit will function as a _______.
- JEE Main - 2026
- Electrical Circuits
- If \( g(x) = 3x^2 + 2x - 3 \), \( f(0) = -3 \) and \( 4g(f(x)) = 3x^2 - 32x + 72 \), then \( f(g(2)) \) is equal to:
- JEE Main - 2026
- Functions
Concepts Used:
Magnetism & Matter
Magnets are used in many devices like electric bells, telephones, radio, loudspeakers, motors, fans, screwdrivers, lifting heavy iron loads, super-fast trains, especially in foreign countries, refrigerators, etc.
Magnetite is the world’s first magnet. This is also called a natural magnet. Though magnets occur naturally, we can also impart magnetic properties to a substance. It would be an artificial magnet in that case.
Read More: Magnetism and Matter
Some of the properties of the magnetic field lines are:
- The lines and continuous and outside the magnet, the field lines originate from the North pole and terminate at the South pole
- They form closed loops traversing inside the magnet.
- But here the lines seem to originate from the South pole and terminate at the North pole to form closed loops.
- More number of close lines indicate a stronger magnetic field
- The lines do not intersect each other
- The tangent drawn at the field line gives the direction of the field at that point.