A parallel-plate capacitor is first charged by a battery and then disconnected from it
PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance
Problem
A parallel-plate capacitor is first charged by a battery and then disconnected from it. A dielectric slab with dielectric constant κ>1 is inserted so that it completely fills the space between the plates. Which of the following best describes what happens to the quantities listed?
(a) Q remains the same, ΔV increases, and the stored energy increases.
(b) Q remains the same, ΔV decreases, and the stored energy decreases.
(c) Q increases, ΔV stays the same, and the stored energy increases.
(d) Q remains the same, ΔV decreases, and the stored energy increases.