Magnetic Field Due to a Current Carrying Circular Loop

A current I flows around a closed path in the horizontal plane of the circle as shown in the figure. The path consists of eight arcs with alternating radii r and 2r. Each segment of arc subtends equal angle at the common centre P. The magnetic field produced by current path at point P is

Two concentric coils $X$ and $Y$ of radii $16 \mathrm{cm}$ and $10 \mathrm{cm}$ lie in the same vertical plane containing $N-S$ direction. $X$ has $20$ turns and carries $16 \mathrm{A}$. $Y$ has $25$ turns & carries $18 \mathrm{A}$. $X$ has current in anticlockwise direction. The magnitude of net magnetic field at their common centre is-

Three rings, each having equal radius R, are placed mutually perpendicular to each other and each having its centre at the origin of co-ordinate system. If current I is flowing through each ring then the magnitude of the magnetic field at the common centre is

A current of $i$ ampere is flowing through each of the bent wires as shown the magnitude and direction of magnetic field ${\rm O}$ is,

Find the magnetic induction at point O, if the current carrying wire is in the shape shown in the figure.

Find the magnetic induction at the origin in the figure shown.

Two circular coils A and B of radius $\frac{5}{\sqrt{2}}$ cm and 5 cm respectively current 5 Amp. and $\frac{5}{\sqrt{2}}$ Amp. respectively. The plane of B is perpendicular to plane of A their centres coincide. Find the magnetic field at the centre.

Find out the expression for the magnetic field at a point on the centre of a coil of radius carrying current I and having N number of turns.

The magnetic field at the centre of a current carrying loop of radius $0.1 \mathrm{m}$ is $5\sqrt{5}$ times that at a point along its axis. The distance of this point from the centre of the loop is(in $\mathrm{cm}$)

Magnetic field associated with loop is given by graphs below. 

Magnetic field associated with loop is given by graphs below. 

Sketch a graph to show the variation of the magnetic field due to a circular current carrying coil with distance along its axis on both sides of its centre.

The magnitude of the net magnetic field at point $P$ is $5.77\times {10}^{-n} \mathrm{T}$as shown in the figure? If two loops of wire carry the same current of $10 \mathrm{mA}$, but the flow of current is in opposite directions. One loop has a radius of $R_1=50 \mathrm{cm}$ and the other loop has a radius of $R_2=100 \mathrm{cm}$. From the first loop to the point $\left(P\right)$, the distance is $0.25 \mathrm{m}$, and from the second loop to the point, the distance is $0.75 \mathrm{m}$ from the point$\left(P\right)$. Find the value of $n$.

A circular coil of wire has $100$ turns of radius $12 \mathrm{cm}$, and carries a current of $1 \mathrm{A}$ in a clockwise direction when viewed from the right side. Find the magnitude and direction of the magnetic field at the center of the coil.

A circular coil of wire has $100$ turns of radius $12 \mathrm{cm}$, and carries a current of $1 \mathrm{A}$ in a clockwise direction when viewed from the right side. Find the magnitude and direction of the magnetic field at the center of the coil in ${10}^{-4} \mathrm{T}$.

Derive the expression for magnetic field at a point on the axis of a circular current carrying loop.

The magnetic field at the centre of a current carrying loop of radius 0.1 m is $5\sqrt{5}$ times that at a point along its axis. The distance of this point from the centre of the loop is

The magnitude of a magnetic field at the centre of a circular coil of radius $R$ , having $N$ turns and carrying a current $I$ can be doubled by changing

The magnetic field normal to the plane of $\mathrm{a}$ coil of $n$ turns and radius $r$ carrying $\mathrm{a}$ current $i$ is measured on the axis of the coil at $\mathrm{a}$ distance $h$ $\left(\mathrm{h}<<\mathrm{r}\right)$ from the centre of the coil. This is smaller than the field at the centre by the fraction

A battery is connected between two points $A$ and $B$ on the circumference of a uniform conducting, ring of radius $r$ and resistance $R.$ One of the arcs $AB$ of the ring subtends an angle $\theta$ at the centre. The value of the magnetic induction at the centre due to the current ring is