A ring of radius 8.0 cm is placed concentrically around a ring of radius 6.0 cm (see figure  below). Each ring carries a current of 4.0 A. (a) What is the magnitude of the magnetic field at the center of the rings if the two currents flow in the  same direction? (b) Find the magnitude of the magnetic field if the currents flow in opposite directions? (c) If the outer ring current is counterclockwise and the inner

An electron with a speed of 4.1 x 106 m/s moves with a circle in a plane to a uniform magnetic field. If the radius o fhte circle is 2.4 cm, then what is the magnitude of the field?

The figure below shows two wires carrying currents of I = 4.55 A in opposite directions, separated by a distance d. Assume d = 8.3 cm. (a)Find the magnitude (in µT) and direction of the net magnetic field at a point halfway between the wires. what is the magnitude µTdirection, (b)Find the magnitude (in µT) and direction of the net magnetic field at point P1, 8.3 cm to the right of the wire on the right. magnitude µTdirection, (c)Find the magnitude (in µT) and direction of the net magnetic field at point P2, 2d = 16.6 cm to the left of the wire on the left. magnitude µTdirection, (d) What If? Repeat parts (a) through (c) for the case where both wires carry currents in the same direction, upward in the figure.Find the magnitude (in µT) and direction of the net magnetic field at a point halfway between the wires. magnitude µTdirection, Find the magnitude (in µT) and direction of the net magnetic field at point P1, 8.3 cm to the right of the wire on the right. magnitude µTdirection, Find…

A beam of electrons moving with speed v = 2.6 × 10’m/s enter and then leave the rectangular region of the magnetic field, as shown below. The trajectory of electrons is a quarter of a circle of radius R= 0.020 m. Mass of electron m = 9.11 x 10-31 kg, charge of electron charge q = 1.6 × 10-19 C). The magnitude and direction of the magnetic field are: %3D %3D the region of the magnetic field a. 0.45 T, perpendicular to the page, into the page Ob. 0.74 T, perpendicular to the page, out of the page Oc. 0.45 T, perpendicular to the page, out of the page С. O d. 0.074 T, perpendicular to the page, into the page e. 0.68 T, perpendicular to he page, into the page