NEET Physics Potential Difference MCQ Question
Consider a parallel plate capacitor with a dielectric fully inserted between the plates. What is the potential difference across the plates if the surface charge densities on the plates are σ and the induced surface charge density on the dielectric is σ_p?
V = (σ - σ_p) * d / ε₀
V = (σ + σ_p) * d / ε₀
V = σ * d / ε₀
V = σ_p * d / ε₀
Correct Answer
Detailed Explanation
The potential difference across the plates with a dielectric is given by V = (σ - σ_p) * d / ε₀, where σ is the surface charge density and σ_p is the induced surface charge density on the dielectric.
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