Physics · 2025
JEE Main · 22 January 2025, Shift 1 · Q34
A parallel-plate capacitor of capacitance 40 μ F is connected to a 100 V power supply. Now the intermediate space between the plates is filled with a…
A parallel-plate capacitor of capacitance $\displaystyle 40 \mu \mathrm{~F}$ is connected to a $\displaystyle 100$ V power supply. Now the intermediate space between the plates is filled with a dielectric material of dielectric constant $\displaystyle \mathrm{K}=2$. Due to the introduction of dielectric material, the extra charge and the change in the electrostatic energy in the capacitor, respectively, are
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 4$ mC and $\displaystyle 0.2$ J
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