A portion of a conductive wire is bent in the form of a semicircle of radius r as shown below in fig. at centre of semicircle, the magnetic induction will be

semicircle of radius R. The electric field at the centre is -

A wire of length l and mass m is bent in the form of a semicircle. The gravitational field intensity at the centre of semicircle is

A wire of length l and mass m is bent in the form of a semicircle. The gravitational field intensity at the centre of semicircle is

A wire of length 36 cm is bent in the form of a semicircle. What is the radius of the semicircle?

Find the centre of gravity of a thin wire bent to a semicircle of radius r.

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

A conductor is bent in the form of concentric semicircles as shown in the figure. The magnetic field at the point O is

A conducting rod AB is bent in the form of a semicircle of radius R. It is kept in a region of uniform magnetic field B such that plane of semicircle is perpendicular to magnetic field. This rod is being moved with a constant speed v perpendicular to AB. Find the emf developed between the ends.