A wire is bent in the form of a circular arc with a straight portion AB. Magnetic induction at O when current flowing in the wire, 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 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 of certain length carries a steady current. It is first bent to form a circular wire of one turn. The same wire is bent to form a circular coil of three turns. The ratio of magnetic induction at the centre of the coil in the two cases is ________

A conducting wire is bent in the form of a circle of a circle and a straight conductor AB is kept outside but near the conducting circle. The wires are in the plane of the paper. If the current flowing from A to B gradually increases in magnitude, will there be any current in the circular conductor? If so, in what direction?

A current I flows an infinitely long wire with cross section in the form of a semi - circular ring of radius R . The magnitude of the magnetic induction along its axis is :

When a certain length of wire is turned into one circular loop, the magnetic induction at the centre of coil due to some current flowing is B_(1) If the same wire is turned into three loops to make a circular coil, the magnetic induction at the center of this coil for the same current will be

When a certain length of wire is turned into one circular loop, the magnetic induction at the centre of coil due to some current flowing is B_(1) If the same wire is turned into three loops to make a circular coil, the magnetic induction at the center of this coil for the same current will be

When a certain length of wire is turned into one circular loop, the magnetic induction at the centre of coil due to some current flowing is B_(1) If the same wire is turned into three loops to make a circular coil, the magnetic induction at the center of this coil for the same current will be