Magnetic Field and Field Lines

Why magnetic field are generated by magnets?

Where does a magnet get its energy?

List the properties of magnetic field lines.

Why magnetic field lines do not intersect?

Magnetic field lines of a bar magnet forms continuos loops.

The closeness of magnetic field lines indicates the strength of the magnetic field. Explain.

How is the strength of a magnetic field?

What happens when the strength of the magnetic field is increased?

Unit of magnetic flux is

The figure shows the magnetic field lines of a magnetic field. There are three points $A$, $B$ and $C$ in this field. Choose the correct option regarding field strength.

The magnetic field intensity $\left(B\right)$ at a distance $\text{'}r\text{'}$from a long straight conductor carrying a steady current varies with $\text{'}r\text{'}$ as shown in figure: 

Which of the following is NOT correct for magnetic filed lines?

SI unit of magnetic field is

A constant current I flows in a horizontal wire in the plane of the paper from West to East as shown in the figure. The direction of magnetic field at a point will be South to North

What are the properties of magnetic field lines?

Magnetic lines of force

Choose the correct statement :

A magnetic field cannot exert any force on a

A conducting ring R is places on the axis of a bar magnet M. The plane of R is perpendicular to this axis. M can move along this axis

In case of a uniform magnetic field the lines of magnetic induction are