Capacitance: JEE Main Physics Previous Year Questions

304 previous year questions from Capacitance. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. $An uncharged capacitor is connected to a battery. While charging the capacitor, how much is the energy lost, from the energy supplied by the battery?$
2. $Let there be a spherically symmetric charge distribution with charge density varying as ρ (r) = ρ_{0} (\frac{5}{4} - \frac{r}{R}) upto r = R, and ρ(r\dots$
3. $The space between the plates of a parallel plate capacitor is filled with a mica sheet of thickness 1 \times 1 0^{- 3} m and a fiber sheet of thickness\dots$
4. $A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric slab is replaced by another slab o\dots$
5. $The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is [NEET 2018]$
6. $Two square shaped metal plates of side 1 m, kept 0.01 m apart in air form a parallel plate capacitor. It is connected to a battery of 500 V . The plates\dots$
7. $Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. Then the net charge on the sphere is:$
8. $A parallel plate capacitor with pates of area 1 m^{2} each, are at a separation of 0.1 m. If the electric field between the plates is 100 N/C, the magnitude of charge o\dots$
9. $A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and the area of each plate is A, the\dots$
10. $Combination of two identical capacitors, a resistor R and a dc voltage source of voltage 6V is used in an experiment on a (C - R) circuit. It is found that for a parallel\dots$
11. $A thin spherical shell of radius R has charge Q spread uniformly over its surface. Which of the following graphs most closely represents the electric field E (r) produced\dots$
12. $Two capacitors of 10 pF and 20 pF are connected to 200 V and 100 V sources respectively. If they are connected by the wire, what is th\dots$
13. $Three parallel plate air capacitors are connected in parallel. Each capacitor has plate area \frac{A}{3} and the separation between the plates is d, 2 d and 3d\dots$
14. $Two metallic plates form a parallel plate capacitor. The distance between the plates is 'd'. A metal sheet of thickness \frac{d}{2} and of area equal to area of each p\dots$
15. $The difference in the effective capacity of two similar capacitors when joined in series and then in parallel is 6 μF . The capacity of each capacitor is$
16. $Two identical capacitors have same capacitance C. One of them is charged to the potential V and other to the potential 2 V. The negative ends of both are connected togeth\dots$
17. $Assume that an electric field E = 30 x^{2} i exists in space. Then the potential difference VA - VO, where VO is the potential at the origin and VA the potential at x =\dots$
18. $Consider the combination of 2 capacitors C_{1} and C_{2}, with C_{2} > C_{1}, when connected in parallel, the equivalent capacitance is \frac{15}{4} times the\dots$
19. $The potential energy of charged parallel plate capacitor is v_{0} . If a slab of dielectric constant K is inserted between the plates, then the new potential energ\dots$
20. $A parallel plate capacitor of capacitance 1 μ F is charged to a potential difference of 20 V. The distance between plates is 1 μ m . The energy densi\dots$
21. $The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is:$
22. $A parallel plate capacitor is charged and then isolated. The effect of increasing the plate separation on charge, potential and capacitance respectively are$
23. $A parallel plate condenser with oil between the plates (dielectric constant of oil K = 2) has a capacitance C. If the oil is removed, then capacitance of the capacitor b\dots$
24. $A parallel plate capacitor of capacitance 200 μF is connected to a battery of 200V. A dielectric slab of dielectric constant 2 is now inserted into the space betw\dots$
25. $A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just\dots$

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Capacitance: JEE Main Physics Previous Year Questions

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