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(b) When r is between R1 and R2

(b) When r is between R1 and R2

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Just need help with the second part I cant figure it out

 

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
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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