Mathematics · Electrostatics
A solid metallic sphere has a charge +3Q. Concentric with this sphere is a conducting spherical shell having a charge -Q. The radius of the sphere is 'A' and that of the spherical shell is 'B' (where B > A). The electric field at a distance 'R' (A < R < B) from the common centre is given by: (where ε0 is the permittivity of vacuum)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Q2πε0R
- 23Q2πε0R
- 33Q4πε0R2✓
- 44Q2πε0R2
Correct answer
3Q4πε0R2
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