A current l flows through a closed loop as shown in figure .The magnetic field at the centre O is

A current I is flowing through the loop , as shown in the figure . The magnetic field at centre O is

A current I is flowing through the loop , as shown in the figure . The magnetic field at centre O is

A current I is flowing through the loop. The direction of the current and the shape of the loop are as shown in the figure. The magnetic field at the centre of the loop is (mu_(0)I)/(R ) (MA=R,MB=2R,angleDMA=90^(@))

A current carrying wire AB of the length L is turned along a circle, as shown in figure. The magnetic field at the centre O.