APFIVE Electric Field in a Conductor's Cavity
A solid conducting sphere of radius R has a net charge Q. A spherical cavity of radius r is located at the center of the sphere. What is the electric field at the center of the cavity?
A
Q/(4πε₀r²)
B
Zero
C
Q/(4πε₀(R-r)²)
D
Q/(4πε₀R²)
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