Magnetic field around a magnet is represented by magnetic field lines forming closed loops. Explain.

Content Curator

The magnetic field around a magnet is represented by magnetic field lines that form closed loops. This means that the magnetic field lines originate from one pole of the magnet, extend outwards, and eventually return to the opposite pole. The following points explain this concept in more detail:

Magnetic Monopoles: Unlike electric charges, magnetic charges (called magnetic monopoles) do not exist in nature. This means that magnetic field lines always form closed loops since they must start and end on opposite poles of a magnet.
North and South Poles: A magnet has two poles, north and south, and the magnetic field lines originate from the north pole and end at the south pole. The direction of the magnetic field lines is from north to south.
Magnetic Field Strength: The strength of the magnetic field is proportional to the number of magnetic field lines passing through a given area. The density of the magnetic field lines represents the strength of the magnetic field in that region.
Magnetic Field Shape: The shape of the magnetic field around a magnet depends on the size, shape, and orientation of the magnet. For example, the magnetic field lines of a bar magnet extend from the north pole to the south pole and form a loop around the magnet.
Magnetic Field Interactions: When two magnets are brought near each other, the magnetic field lines interact with each other. If the poles of the two magnets are the same, the magnetic field lines repel each other, while opposite poles attract each other.

In summary, the magnetic field around a magnet is represented by magnetic field lines forming closed loops due to the absence of magnetic monopoles, with the magnetic field strength being proportional to the number of magnetic field lines and their density. The shape and orientation of the magnetic field around a magnet depending on the size, shape, and orientation of the magnet. When two magnets are brought near each other, the magnetic field lines interact with each other based on their polarity.

Magnetic Field Lines

Magnetic Field Lines

Also read:

Important Concept-Related Links
Difference between Electromagnet and Permanent Magnet	Magnetic Declination	Magnetometer
Magnetic Flux	Electromagnetism	Faraday Constant Value
Magnetic Poles And Their Significance	Curie Weiss Law	Bar Magnet as an Equivalent Solenoid
Current Coil	Curie Constant	Magnetic Levitation Project

CBSE CLASS XII Related Questions

1.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

The total charge of the two spheres is conserved.
Both spheres attain the same potential.
The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2)}{(r_1 + r_2)}$
The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2) (r_1 + r_2)}{r_1 r_2}$

View Solution

2.
An electric field $\vec{E}$ is established across the ends of a cylindrical conductor of length L and area of cross-section A. Discuss how electrons attain an average velocity, independent of time. Hence, obtain a relation between current in the conductor and this ‘average velocity’ of electrons.

View Solution

3.
Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

View Solution

4.
Consider a cylindrical conductor of length $ l $ and area of cross-section $ A $. Current $ I $ is maintained in the conductor and electrons drift with velocity $ \vec{v}_d \, (|\vec{v}_d| = \frac{eE}{m} \tau) $, where symbols have their usual meanings. Show that the conductivity of the material of the conductor is given by \[ \sigma = \frac{n e^2 \tau}{m}. \]

View Solution

5.
Write two advantages of reflecting telescope over refracting telescope.

View Solution

6.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

View Solution

Magnetic field around a magnet is represented by magnetic field lines forming closed loops. Explain.

CBSE CLASS XII Related Questions

1.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

3.
Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

5.
Write two advantages of reflecting telescope over refracting telescope.

6.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

Magnetic field around a magnet is represented by magnetic field lines forming closed loops. Explain.

CBSE CLASS XII Related Questions

1.Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

3.Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

5.Write two advantages of reflecting telescope over refracting telescope.

6.With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

3.
Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

5.
Write two advantages of reflecting telescope over refracting telescope.

6.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.