The magnitude of the electric field due to a point charge decreases with increasing distance from that charge. (Coulomb's constant: k = 8.99 x 109 N.m2/C2) The electric field is measured 0.50 meters to the right of a point charge of +5.00 x 10-9 C, (where 1 nano Coulomb = 1 nc = 1 x10-9C) What is the magnitude of this measured electric field? 5.56 x 10-3 N/C 8.99 x 109 N/C O 1.80 x 1020 N/C 8.99 x 1020 N/C 1.80 x 102 N/C