The right-hand thumb rule is used to find the direction of magnetic field around a current carrying a straight conductor.

Current is passed through the circular loop as shown in figure. What is the direction of magnetic field at $X$ and $Y$?

Consider the following statements and select the correct option which correctly identifies true $\left(\mathrm{T}\right)$ and false $\left(\mathrm{F}\right)$.

$\left(\mathrm{i}\right)$ Magnetic field lines do not intersect because they always travel parallel to each other in North to South direction.
$\left(\mathrm{ii}\right)$ When a current flows through a straight copper conductor, it gets permanently magnetised.
$\left(\mathrm{iii}\right)$ The strength of magnetic field at the centre of a circular coil is inversely proportional to the radius of coil.
 

The magnetic force on a current carrying wire placed in uniform magnetic field if the wire is oriented perpendicular to magnetic field is

A straight wire is placed between two poles of a magnet as shown in figure. If an alternating current passing through a wire then wire will

A small conducting rod of length $l$, moves with a uniform velocity $v$ in a uniform magnetic field $\mathrm{B}$ as shown in figure.

A negatively charged particle is at rest in a magnetic field $B$. The force on the particle is :

Two current-conducting wires are hung on a plastic rod. A large current is passed through the two wires in the direction shown. Which of the following options is correct regarding this?

$\left(\mathrm{i}\right)$ $\mathrm{l}$ and $\mathrm{III}$ parts of wire repel each other.
$\left(\mathrm{ii}\right)$ $\mathrm{II}$ and $\mathrm{IV}$ parts of wire repel each other.
$\left(\mathrm{iii}\right)$ $\mathrm{I}$ and $\mathrm{IV}$ parts of wire repel each other.
$\left(\mathrm{iv}\right)$ $\mathrm{II}$ and $\mathrm{III}$ parts of wire repel each other.