In Fig. Find the magnetic field at common centre.

The current-loop PQRSTP formed by two circular segments of radii R_(1) and R_(2) carries a current of I ampers. Find the magnetic field at the common centre O. what will be the field if angle alpha = 90^(@) ?

In Fig, find the magnetic field at point P.

In Fig, find the magnetic field at point P.

An otherwise infinite, straight wire has two concentric loops of radii a and b carrying equal currents in opposite directions as shown in Fig. The magnetic field at the common centre is zero for

An otherwise infinite, straight wire has two concentric loops of radii a and b carrying equal currents in opposite directions as shown in Fig. The magnetic field at the common centre is zero for

The current loop abcde formed by two circular segments of radii r_1(=4cm) and r_2(=6cm) with common centre at O, carries a current I(=2A) as shown in figure. What is the magnetic field at the common centre O? What will be the value of magnetic field at O when theta=90^@ ?

For the arrangement shown in Fig. determine the magnetic field at centre O.

For the arrangement shown in Fig. determine the magnetic field at centre O.