The charge density of an insulating sphere of radius R is given as ρ(r

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The charge density of an insulating sphere of radius R is given as ρ(r) = Q4πR2r. The insulation sphere is placed at the center of a conducting spherical shell of inner Radius of 2R and outer radius 3R which has the total charge of +2Q. Which of the followings is the magnitude of the electric field at the region R

The charge density of an insulating sphere of radius R is given as ρ(r) = Q4πR2r. The insulation sphere is placed at the center of a conducting spherical shell of inner Radius of 2R and outer radius 3R which has the total charge of +2Q. Which of the followings is the magnitude of the electric field at the region R

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The charge density of an insulating sphere of radius

R

is given as

ρ (r) = \frac{Q}{4 π R^{2} r}

. The insulation sphere is placed at the center of a conducting spherical shell of inner Radius of

2 R

and outer radius

3 R

which has the total charge of

+ 2 Q

. Which of the followings is the magnitude of the electric field at the region

R < r < 2 R

? a)

k \frac{4 Q}{r^{2}}

b)

k \frac{2 Q}{r^{2}}

c)

k \frac{3 Q}{2 r^{2}}

d)

k \frac{Q}{r^{2}}

e)

k \frac{9 Q}{2 r^{2}}

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