18 12:01:00 AM- -Due Date: 2/27/2018 1:59:00 PM End Date: 3 (10% ) Problem 10: A

Question

18 12:01:00 AM- -Due Date: 2/27/2018 1:59:00 PM End Date: 3 (10% ) Problem 10: A hollow, uniformly charged sphere has an inner radius of ri-0.055 m and an outer radius of r,-0.3, m. The sphere has a net charge of Q = 1.8 C. 3/6/2018 11:59:00 PM what is the magnitude of the electric field in newtons per coulomb, at a distance of r-021 m from, the center of the sphere? 94% cotan0 asin acos0 atan0 acotanO sinh0 coshOtanh cotanh0 0 1 23 0 3 per attemp) detailed view a4 I give up! Feedback: 0%deduction per feedback.

Explanation / Answer

Here .

for the electric field inside the sphere ,

first we have to find charge enclosed inside the sphere of radius , r = 0.21 m

Q = 1.8 * (4/3pi * 0.21^3 - 4/3pi * 0.055^3)/(4/3pi * 0.31^3 - 4/3pi * 0.055^3)

Q = 0.553 uC

Now, for the electric field at r = 0.21 m

E = 9 *10^9 * 0.553 * 10^-6/(0.21^2)

E = 112857 N/C

the electric field is 112857 N/C

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