(b) When r is between R1 and R2
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Just need help with the second part I cant figure it out

Transcribed Image Text:A negative point charge – is at the center of a hollow insulating spherical shell, which has an inner radius
R₁ and an outer radius R₂. There is a total charge of +3Q spread uniformly throughout the volume of the
insulating shell, not just on the surface. What is the electric field at postion r away from the center? Use el as
the electric constant.
(a) When r is less than R1
-Q/(4*pi*e0*r^2)
Q
4.π.e0.r²
(b) When r is between R1 and R2
(-Q+(3*Q*r^2/R2^2))/(4 X
-Q+ (30²)
4.π.e0.²
(c) When r is larger than R2
Q/(2*pi*e0*r^2)
Q
2.π.e0.²
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