A parallel-plate capacitor is completely filled with a dielectric of constant

PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

A 1.0 μF1.0\,\mu\text{F} parallel-plate capacitor is completely filled with a dielectric of constant κ=3\kappa=3. The capacitor is charged to a potential difference of 100 V100\,\text{V} and then disconnected from the battery so that the charge remains fixed. The dielectric is then slowly and completely removed. How much work must an external agent do during the removal? (a) 0.015 J0.015\,\text{J} (b) 0.030 J0.030\,\text{J} (c) 0.045 J0.045\,\text{J} (d) −0.030 J-0.030\,\text{J}

Related theory

Browse the problem library