A coil having $N$ turns is wound tightly in the form of a spiral with inner and outer radii $a$ and $b$ respectively. When current $I$ passes through the coil, the magnetic field at the centre is

\frac{N μ_{0} I}{2 (b - a)} l o g_{e} \frac{b}{a}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

\frac{N μ_{0} I}{2 (b - a)} l o g_{e} \frac{b + a}{b - a}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\frac{N μ_{0} I}{(b + a)} l o g_{e} \frac{b}{a}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

n o n e o f t h e s e

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $\frac{N μ_{0} I}{2 (b - a)} l o g_{e} \frac{b}{a}$
undefined

Suggest Corrections

Similar questions

Q. A coil having N turns is wound tightly in the form of a spiral with inner and outer radii 'a' and 'b' respectively. When a current I passes through the coil, the magnetic field at the centre is

Q. Find B - field at the centre of a spiral of N - Turns carrying a current i and having inner and outer radii a and b respectively.

Q. A wire bent in the shape of a regular n polygonal loop carries a steady current I. Let l be the perpendicular distance of a given segment and R be the distance of a vertex, both from the centre of the loop. The magnitude of the magnetic field at the centre of the loop is given by.

Q. A current passing through a circular coil of two turns produces magnetic field

B

at its centre. The coil is then produces magnetic field

B

at its centre. The coil is then rewound so as to have four turns and the same current is passed through it. The magnetic field at its centre now is

A long insulated copper wire is closely wound as a spiral of ‘N’ turns. The spiral has inner radius ‘a’ and outer radius ‘b’. The spiral lies in the XY plane and a steady current ‘I’ flows through the wire. The Z-component of the magnetic field at the centre of the spiral is :

Join BYJU'S Learning Program

A coil having N turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively. When current I passes through the coil, the magnetic field at the centre is

The correct option is A Nμ0I2(b−a)logebaundefined

A coil having $N$ turns is wound tightly in the form of a spiral with inner and outer radii $a$ and $b$ respectively. When current $I$ passes through the coil, the magnetic field at the centre is

The correct option is A $\frac{N μ_{0} I}{2 (b - a)} l o g_{e} \frac{b}{a}$
undefined