Figure. Shows a small loop carrying a current I. The curved portion is an arc of a circle of radius R and the straight portion is a chord to the same circle subtending an angle `theta`. The magnetic induction at centor O is

If a semi perimeter of a circle of radius r equals perimeter of a sector of the same circle subtending and angle theta at the center then,

A wire is bent in the form of a circular arc of radius r with a straight portion AB. If the current in the wire is i , then the magnetic induction at point O is

A wire is bent in the form of a circular arc of radius r with a straight portion AB. If the current in the wire is i , then the magnetic induction at point O is

Consider a circle of radius R. What is the lengths of a chord which subtends an angle theta at the centre ?

A metallic wire carrying a current I is bent into the form as shown in the figure. The circular portion ABC of the wire is of radius r and the straight portion AC subtends an angle 2theta at the centre O. Find the magnetic field due to the conductor at point O. If the radius of the curved path is r, find the magnetic field at the centre O.

In the figure, the curved part represents arc of a circle of radius x . If it carries a current I then the magnetic field at the point O is

In the figure, the curved part represents arc of a circle of radius x . If it carries a current I then the magnetic field at the point O is

Two very long wires carrying equal current i are bent and arranged as shown in figure. Both AB and CD are arcs of the same circle, both subtending right angles at the centre O. The magnetic field at O is: