A wire in the form of a square of side `'2m'` carries a current `2A`. Then the magentic induction at the centre of the square wire is `(` magnetic permeability of free space `=mu_(0))`

A wire in the from of a square of side 'a' carries a current i . Then the magnetic induction at the centre of the square wire is (Magnetic permeability of free space= mu_(0) )

A square loop of side a carris a current I . The magnetic field at the centre of the loop is

A wire in the from of a circular loop of one turn carrying a current produces a magnetic fild B at the centre. If the same wire is looped into a coil of two turns and carreis the same current, the new value of magnetic induction at the centre is

A wire of length l is bent in the form of a square and carries a current I. What is the value of its magnetic moment?

A wire of length l is bent in the form of an equilateral triangle and carries an electric current i. (a) Find the magnetic field B at the centre. (b) If the wire is bent in the form of a square, what would be the value of B at the centre?

A solenoid of length 50 cm and a radius of cros section 1 cm has 1000 turns of wire wound over it if the current carried is 5A the magnetic field on its axis near the centre of the solenoid is approximately (Given permeability of free space mu_(0)=4pi xx10^(-7) T-mA^(-1) )

Two identical wires A and B have the same length l and carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side a. If B_1 and B_2 are the values of magnetic induction at the centre of the circle and the centre of the square, respectively, then the ratio B_1//B_2 is

Calculate the magnetic field induction at the centre of a square shaped coil of side 10 cm, if it carries of current of 1A.