Figure 1 Figure 2 +q . L -q -q -q a 0 -q 1 1 1 *b o o *d o Consider two separate systems, each with four charges of magnitude q arranged in a square of length L as shown above. Points a and c are in the center of their squares while points b and d are half way between the lower two charges. Select True or False for the following statements. True: The electric field at a is zero. True: The electric potential at a is zero. True: The electric potential at c is zero. False: The electric field at d is zero. False: The electric field at c is zero. True: The electric potential at b is zero. False: The electric otential at d is zero. False: The electric ield at b is zero. You are correct. . . Your receipt no. is 160-9448 W Usin the diagsram above find the magnitude of the electric field at point d. DAT : -= 1.1 0 pc, L: (5.40 m. T0 at the ycomponent of Efield from a charge, calculate the magnitude of E with Coulombs law, then multiply by the cosine of the angle between the E fiel and the yaxis. The cosine of an angle in a right triangle is the adjacent over the hypotenuse. Incorrect. Tries 1/4 Previous Tries