Two coaxial cylindrical conductors are shown in perspective and cross-section ab
ID: 1917020 • Letter: T
Question
Two coaxial cylindrical conductors are shown in perspective and cross-section above. The inner cylinder has radius a = 2.0 cm, length L = 10.0 m and carries a total charge of Qinner = + 8.0 nC (1 nC = 10-9 C). The outer cylinder has an inner radius b = 6.0 cm, outer radius c = 7.0 cm, length L = 10.0 m and carries a total charge of Qouter = - 16.0 nC (1 nC = 10-9 C). What is Ex, the x-component of the electric field at point P which is located at the midpoint of the length of the cylinders at a distance r = 4.0 cm from the origin and makes an angle of 30.0o with the x-axis?
Explanation / Answer
E?dA=qenclosed/e Okay so I found the charge per unit length (?) which is Lguasss. ?=0.8 nC. If ? is charge per unit length, it should have units of C/m. Then I performed the integral and solved for E to get E=qenclo/(2*Pi*e*r*L). Opps I meant qenclosed =0.8nC r=0.04m 1/(e*Pi*2)=8.85*10^-12 N*m^2/C^2 L=10m
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.