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JEE Main 2021 (Online) 17th March Morning Shift
Numerical
+4
-1
A parallel plate capacitor whose capacitance C is 14 pF is charged by a battery to a potential difference V = 12 V between its plates. The charging battery is now disconnected and a porcelin plate with k = 7 is inserted between the plates, then the plate would oscillate back and forth between the plates with a constant mechanical energy of _____________ pJ. (Assume no friction)
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2
JEE Main 2021 (Online) 17th March Morning Shift
Numerical
+4
-1
Four identical rectangular plates with length, l = 2 cm and breadth, b = $${3 \over 2}$$ cm are arranged as shown in figure. The equivalent capacitance between A and C is $${{x{\varepsilon _0}} \over d}$$. The value of x is ______________. (Round off to the Nearest Integer)

JEE Main 2021 (Online) 17th March Morning Shift Physics - Capacitor Question 48 English
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3
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
In a parallel plate capacitor set up, the plate area of capacitor is 2 m2 and the plates are separated by 1 m. If the space between the plates are filled with a dielectric material of thickness 0.5 m and area 2 m2 (see fig.) the capacitance of the set-up will be __________$$\varepsilon $$o. (Dielectric constant of the material = 3.2) (Round off to the Nearest Integer)

JEE Main 2021 (Online) 16th March Evening Shift Physics - Capacitor Question 50 English
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4
JEE Main 2020 (Online) 2nd September Evening Slot
Numerical
+4
-0
An ideal cell of emf 10 V is connected in circuit shown in figure. Each resistance is 2 $$\Omega $$. The potential difference (in V) across the capacitor when it is fully charged is ______. JEE Main 2020 (Online) 2nd September Evening Slot Physics - Capacitor Question 61 English
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