Three charged metal disks are arranged as shown (cutaway view). The disks are he

Question

Three charged metal disks are arranged as shown (cutaway view). The disks are held apart by insulating supports not shown in the diagram. Each disk has an area of 2.5 m2 (this is the area of one flat surface of the disk). Use the value 8.85 x 1012 C2/(N-m2) for The charge 0, -6x 10-8 coulombs, and the charge o,-2 x 107 coulombs. 0.02 m4mm1.7 mm 002 002 01-0 Disk2 Disk 1 Disk 3 What is the magnitude of the electric field in the region between disks 1 and 2? What is the direction of the electric field between Which of the following statements are true? Choose all that apply. Along a path from A to B¡7 choose? The sign of ve-V should be What is the potential difference Ve V

Explanation / Answer

Capacitance, C = A e0/d

C = (8.85 x 10^-12)(2.5)/0.004 = 5.53 x 10^-9 F

Voltage, V = Q/C1 = (6 x 10^-8)/(5.53 x 10^-9) = 10.85 V

Elecric field, E = V/d = 10.85/0.004 = 2712.48 N/C

Along the path from A to B, (Vb - Va) = 0

Vc - Vb = - Q1/C1 = - (6 x 10^-8)/(5.53 x 10^-9) = - 10.85 V

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