Question

assignment gnetism and Waves yg : PHYS 2326- Summer 2018 | EM_B_2326 ake this assignment an unlimited number of times. Question 3 of 7 seps05.24.31a 64.29% Takes:4 Fill in the blanks. consider a thin spherical shell of radius 12.7 cm with a total charge of + 26.5 ? ? distributed uniformly on its surface. (a) Find the electric field 11.2 cm from the center of the charge distribution. Take dally outward as the post e dre tion. Round your answer to three significant figures. Take the Coulomb constant to be k, 8.99 x 10' Nm2/c NIC (b) Find the electric field 45.4 cm from the center of the charge distribution. Round your answer to three significant figures. 11.610 3 MNIC Correct; Incorrect Partially answered nswered O Not answered & saved Answered

Answer 1

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epsilon .f due to a uniformly change spherical shell. outside E = q/4 pi eplsion_0 r^2 where r in distance of point from centre of sphere inside E = 0 now, a epsilon f at 11.2 cm from center of change distribution Since r = 11.2 cm lies inside the spherical shell Therefore E .F = 0 v/m b) at r = 45.4 cm , q = 26.5 mu c, 1/ 4 pi epsilon_0 = 8.99 times 10^9 wm^2/c^2 E = 26.5 times 10^-6 times 8.99 times 10^-9/(45.4 times 10^-2)^2 N/C R = 1.156 times 10^-2 N/c E = 1.156 times 10^6 N/c E = 1.16 times 10^6 N/c