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

A square loop of edge 'a' carries a current l. The magnetic field at the centre of loop is

A square conducting loop of side length L carries 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 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?