Calculate the total electric field at point A and at point B.

pts Four charges are arranged at the corners of a square of side length, L = 39.00 cm. All four charges have the same magnitude q = 3.00 nC but the lower right charge is negative. Find the magnitude of the electric field at the center of the square in N/C. Round to the nearest whole number (no decimal places). Solution: N/C

The figure shows an electric dipole. What is the magnitude of the dipole's electric field at point P? Assume that q = 5.06 x 10-6 C, d = 1.30 x 10-6 m, and r = 1.32 cm. +q L. d/2 d/2 -g

ST At a distance of 48.7 cm from a very long (essentially infinite) uniform line of charge, the electric field strength is 1,866 N/C. At what distance (in cm) from the line will the field strength be equal to 811 N/C? X