Spherical Conductor
A spherical conductor of radius R carries a charge Q. What is the electric field inside the conductor?
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About This Question
- Subject
- physics
- Chapter
- electrostatics
- Topic
- spherical conductor
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Zero
- Conductor Property: In electrostatic equilibrium, any internal electric field would cause free electrons to move.
- Gauss's Law Proof: Imagine a Gaussian surface inside the conductor. Since all excess charge Q repels to the outer surface, the enclosed charge is zero.
- Result: ∮E⋅dA=0/ϵ0⟹Einternal=0.
- Potential Check: Although the field is zero, the potential is not zero; it is constant and equal to the surface potential (kQ/R).
This easy difficulty physics question is from the chapter electrostatics, covering the topic of spherical conductor. It appeared in the 2025 exam.
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