Current I A flowing in a circular coil of radius r. then the magnetic induction at the centre is B. If the current is doubled then the magnetic induction will be

A current I is flowing in a hexgonal coil of side a figure. The magnetic field induction at the centre O of the coil will be

A current I is flowing in an octagonal coil of side a figure. The magnetic field induction at the centre O of the coil will be

Due to the flow of current in a circular loop of radius R , the magnetic induction produced at the centre of the loop is B . The magnetic moment of the loop is ( mu_(0) =permeability constant)

Due to the flow of current in a circular loop of radius "R" ,the magnetic induction produced at the centre of the loop is B and magnetic moment of the coil is M .The value of (B)/(M) will be (mu_(0) is magnetic, permeability

If the current flowing in a circular loop is in anticlockwise direction then the magnetic induction will be

If the current flowing in a circular loop is in clockwise directions, then the magnetic induction will be

When a long wire carrying a steady current is best into a circular coil of one turn, the magnetic induction at its centre is B. When the same wire carrying the same current is bent into a circular coil of one turn, the magnetic induction at its centre is B. when the same wire carrying the same current is bent to form a circular coil of a turns of a smaller radius, the magnetic induction at the centre will be