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A parallel-plate capacitor of capacitance \(40\mu \mathrm{F}\) is connected to a 100 V power supply. Now the intermediat…

Q1

A parallel-plate capacitor of capacitance \(40\mu \mathrm{F}\) is connected to a 100 V power supply. Now the intermediate space between the plates is filled with a dielectric material of dielectric constant \(\mathrm{K}=2\). Due to the introduction of dielectric material, the extra charge and the change in the electrostatic energy in the capacitor, respectively, are

[JEE Main 2025, 22 Jan (Shift 1)]

a

4 mC and 0.2 J

b

2 mC and 0.2 J

c

8 mC and 2.0 J

d

2 mC and 0.4 J

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