Question

Please help me with #1.3

.3) The dashed lines in the figure below represent equipotentials (with values labeied n of the drawing) in a region in which there is an electric fieid. Also shown are our croies a different distances from point P. Six points on these circles are labeled A to Rank the magnitude of the electric field at the labelled points A-F. Expiain your reasoning 20V 40v 40V 70V 30v

Book: physics for scientists and engineers 4th edition knight

Answer 1

Given The dash lines in the given figure below represent equipotentials in a region in which there is an electric field Work done on a charged particle when we move from one point to another a to b is w_a rightarrow b = -(v_b - v_a) downarrow potential energy at point b U = v_q rightarrow potential at a point From the given figure V_A = 30 q V_B = -90 q V_C = -10 q V_D = 0 V_E = 20 q V_F = 40 q V_e = 20 q \r\n W _eA = -(v_e - v_A) = -(20 q - 30 q) = 10 q W_eB = -(v_p - v_B) = -(20 q - (-20 q)) = -40 q W_eC = -(v_p - v_c) = -(20 q - (-10 q)) = -30 q W_eD = -(v_e - v_D) = -(20 q - (0)) W_eD = -20 q W_eE = -(v_e - v_E) = -(20 q - 20 q) = 0 W_eF = -(v_e - v_F) = -(20 q - 40 q) = 20 q \r\n Greatest 1 w_eF 2 w_eA 3 w_eE 4 w_eD 5 w_eC 6 w_eB * p to E there is no need to do