Physics · 2026
JEE Main · 23 January 2026, Shift 2 · Q35
A parallel plate capacitor with plate separation 5 mm is charged by a battery. On introducing a mica sheet of 2 mm and maintaining the connections of…
A parallel plate capacitor with plate separation $\displaystyle 5$ mm is charged by a battery. On introducing a mica sheet of $\displaystyle 2$ mm and maintaining the connections of the plates with the terminals of the battery, it is found that it draws $\displaystyle 25$% more charge from the battery. The dielectric constant of mica is $\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 2.0$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.