Two thin, isolated, concentric conducting spheres of radii 2.00 cm and 8.40 cm ,

Question

Two thin, isolated, concentric conducting spheres of radii 2.00 cm and 8.40 cm, have net charges of 5.00 nC and 49.00 nC, respectively. What is the electric field at 1.200 cm from the center of the spheres? Use the sign of the field to indicate direction, thus a positive electric field would point away from the center of the spheres.

What is the electric potential at 1.200 cm from the center of the spheres?
What is the electric field at 6.160 cm from the center of the spheres?
What is the electric potential at 6.160 cm from the center of the spheres?

What is the electric field at 9.200 cm from the center of the spheres?

What is the electric potential at 9.20 cm from the center of the spheres?

Explanation / Answer

part a)

V=kq1/1.2

part b)

E=kq1/6.162

part c)

V=k(q1+q2)/6.16

part d)

E=k(q1+q2)/9.22

part e)

V=k(q1+q2)/9.2

since both charegs are +ve so field is always outwards

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