How does the magnitude of the electric field at the origin for the quarter-circle are you have just calculated compare to the electric field at the origin produced by a point charge Q = 2.1 C located a distance a = 8.8 cm from the origin along a 45 line as shown in the figure? The magnitude of the field from the point charge is less than that from the quarter-arc of charge. The magnitude of the field from the point charge is equal to that from the quarter-arc of charge The magnitude of the field from the point charge is greater than that from the quarter-arc of charge -a a- 2Q a What is the magnitude of the electric field at the origin produced by a semi-circular arc of charge = 4.2 C, twice the charge of the quarter-circle arc? 3107467.381 N/C