An electric field with initial magnitude 120 V/m directed into the page and increasing at a rate of 13.0 V/(m ·s) is confined to the area of radius R = 13.0 cm in the figure below. If r = 44.0 cm, what are the magnitude and direction of the magnetic field at point A? magnitude direction to the right A

1. A 0.190-A current is charging a capacitor that has circular plates 12.2 cm in radius. The plate separation is 4.00 mm. (a) What is the time rate of increase of electric field between the plates? (b) What is the magnetic field between the plates 5.00 cm from the center?

-0.35 µC has a velocity of 2500000 m/s at 45° to the +x axis in the xz plane, with a positive x and z A charge q = component. There is a magnetic field of magnitude 0.06 T. a) If B is along the +zaxis, what is the force on the charge? N along the +y axis b) If the force on the charge is 2 x 10-3 N along +y axis, what is the direction of B? degrees from the +zaxis in the xz plane.

What is the magnitude and direction of the acceleration on the electron in a 3T magnetic field ( -k) and an 800 V/m (-j) electric field, shown below (neglecting gravity), if its velocity is 300 m/s? X X X B= 3.0 T X X X X X X X X X X E=800 V/m 3.512 EE+13 m/s2 (j) -3.512 EE+13 m/s2 (j) 3.512 EE-13 m/s2 (k) 2.489 EE+13 (j) -2.489 EE+13 (j)

An electric field with initial magnitude 210 V/m directed into the page and increasing at a rate of 13.0 V/(ms) is confined to the area of radius R = 15.0 cm in the figure below. If r = 45.0 cm, what are the magnitude and direction of the magnetic field at point A? magnitude direction ---Select--- Ø Ø A O R

A charged particle moves through a velocity selector at constant velocity. The velocity selector is configured with "crossed" electric and magnetic fields of magnitude E = 1.50 x 104 N/C and B = 0.4 T. %3D Hint a. What is the velocity of the charged particle? Velocity of the charged particle is x 104 m/s. b. When the electric field is turned off, the charged particle travels in a circular path of radius 6 mm, as it travels through the magnetic field (still at B = 0.4 T). What is the mass-to-charge ratio of the particle? Hint for (b) Mass-to-charge ratio of the part is kg/C. (Use the "E" notation to enter your answer in scientific notation. For example, to enter 3.14 × 10´ 12".) - 12 enter "3.14E-

wrong