A uniformly charged disk has radius 2.50 cm and carries a total charge of 6.0x 10-12 C .(Figure 1) Find the magnitude of the electric field on the z-axis at z = 20.0 cm Find the direction of the electric field on the a-axis at z = 20.0 cm. Is the magnitude of the electric field you calculated in part A larger or smaller than the electric field 20.0 cm from a point charge that has the same total charge as this disk? What is the percent difference between the electric fields produced by the finite disk and by a point charge with the same charge at a = 20.0 cm? dEx dp

A uniformly charged disk has radius 2.50 cm and carries a total charge of 6.0x 10-12 C .(Figure 1) Find the magnitude of the electric field on the z-axis at z = 20.0 cm Find the direction of the electric field on the a-axis at z = 20.0 cm. Is the magnitude of the electric field you calculated in part A larger or smaller than the electric field 20.0 cm from a point charge that has the same total charge as this disk? What is the percent difference between the electric fields produced by the finite disk and by a point charge with the same charge at a = 20.0 cm? dEx dp