Electrostatics II — Potential & Capacitance — JEE Main PYQs & Practice Questions

Electrostatics II — Potential & Capacitance is a Physics chapter in the JEE Main syllabus. This page brings together 175 previous-year and practice questions on Electrostatics II — Potential & Capacitance, organised into 6 topics: Electric Potential and Potential Energy, Equipotential Surfaces, Capacitors, Dielectrics, Energy Stored in Capacitor and Combination of Capacitors. Most questions come with a step-by-step solution you can work through free in PrepWiser.

Download Electrostatics II — Potential & Capacitance JEE Main PYQs as a free PDF (with answer key)

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Chapter weightage: how many questions each chapter had per shift in the 2024–26 papers.

Electric Potential and Potential Energy

• Two charges 7μC and -2μC are placed at (-9,0,0)cm and (9,0,0)cm respectively in an…
• Which of the following correctly represents the variation of electric potential (V) of a…
• Two large plane parallel conducting plates are kept 10 cm apart as shown in figure. The…
• Two point charges of 1 nC and 2 nC are placed at the two corners of equilateral triangle…
• The two thin coaxial rings, each of radius 'a' and having charges +Q and -Q respectively…
• Two point charges -4 μ c and 4 μ c, constituting an electric dipole, are placed at…
• 27 similar drops of mercury are maintained at 10V each. All these spherical drops…
• Consider two identical metallic spheres of radius R each having charge Q and mass m…
• Two charged conducting spheres of radii a and b are connected to each other by a…
• A three coulomb charge moves from the point (0,-2,-5) to the point (5,1,2) in an…
• 512 identical drops of mercury are charged to a potential of 2V each. The drops are…
• For a uniformly charged thin spherical shell, the electric potential (V) radially away…
• Two charges 7 μ c and -4 μ c are placed at (-7 cm, 0,0) and (7 cm, 0,0) respectively…
• Two identical electric point dipoles have dipole moments p⃗ ₁ = pî and p⃗ ₂ = - pî and…
• Three small identical bubbles of water having same charge on each coalesce to form a…
• Electric potential at a point 'P' due to a point charge of 5 × 10⁻⁹ C is 50 V. The…
• Two isolated metallic solid spheres of radii R and 2 R are charged such that both have…
• The distance between charges +q and -q is 2 l and between +2 q and -2 q is 4 l. The…
• An electric dipole of dipole moment is 6.0 × 10⁻⁶ C m placed in a uniform electric field…
• An electric charge 10⁻⁶ μ C is placed at origin (0,0) m of X-Y co-ordinate system. Two…

Equipotential Surfaces

• Given below are two statements : one is labelled as Assertion (A) and the other is…
• Three infinitely long wires with linear charge density λ are placed along the x-a x i s…

Capacitors

• A parallel plate capacitor consisting of two circular plates of radius 10 cm is being…
• In the network shown below, the charge accumulated in the capacitor in steady state will…
• As show in the figure, in steady state, the charge stored in the capacitor is…
• A force of 10 N acts on a charged particle placed between two plates of a charged…
• Given below are two statements: One is labeled as Assertion A and the other is labeled…
• A parallel plate capacitor is filled equally(half) with two dielectrics of dielectric…
• Capacitance of an isolated conducting sphere of radius R₁ becomes n times when it is…
• In an electrical circuit drawn below the amount of charge stored in the capacitor is…
• The charge on capacitor of capacitance 15μF in the figure given below is :
• An RC circuit as shown in the figure is driven by a AC source generating a square wave…
• Concentric metallic hollow spheres of radii R and 4R hold charges Q₁ and Q₂…
• Two identical thin metal plates has charge q₁ and q₂ respectively such that q₁>q₂. The…
• Calculate the amount of charge on capacitor of 4μF. The internal resistance of battery…
• A 2μF capacitor C₁ is first charged to a potential difference of 10V using a battery…
• In the given figure the total charge stored in the combination of capacitors is 100 μ C…
• Identify the correct statements : A. Effective capacitance of a series combination of…
• Cₒ is the capacitance of a parallel plate capacitor with air as a medium between the…
• The circuit shown in the figure consists of a charged capacitor of capacity 3 μF and a…
• A capacitor is connected to a 20 V battery through a resistance of 10Ω. It is found that…
• The capacitance of a parallel-plate capacitor doubles if:

Dielectrics

• Three parallel plate capacitors each with area A and separation d are filled with two…
• A parallel plate capacitor has plate of length 'l', width ‘w’ and separation of plates…
• If q f is the free charge on the capacitor plates and q b is the bound charge on the…
• A parallel plate capacitor is having separation between plates 0.885 mm . It has a…
• A parallel plate capacitor with plate area A and plate separation d is filled with a…
• Two capacitors of capacities 2C and C are joined in parallel and charged up to potential…
• Given below two statements : One is labelled as Assertion (A) and other is labelled as…
• A parallel plate capacitor has capacitance C, when there is vacuum within the parallel…
• Introducing a dielectric slab (dielectric constant K) fully into a parallel-plate…
• In the reported figure, a capacitor is formed by placing a compound dielectric between…
• A capacitor has capacitance 5μF when it's parallel plates are separated by air medium of…
• A parallel plate capacitor has plate area 100 m² and plate separation of 10 m. The space…
• A parallel plate capacitor of capacitance 200 μF is connected to a battery of 200 V. A…
• In a parallel plate capacitor set up, the plate area of capacitor is 2 m² and the plates…
• The material filled between the plates of a parallel plate capacitor has resistivity 200…
• A source of potential difference V is connected to the combination of two identical…
• A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is…
• A parallel plate capacitor with plate area A has separation d between the plates. Two…
• For changing the capacitance of a given parallel plate capacitor, a dielectric material…
• A parallel plate capacitor with plate separation 5 mm is charged by a battery. On…

Energy Stored in Capacitor

• A 16 Ω wire is bend to form a square loop. A 9 V battery with internal resistance 1 Ω is…
• A parallel plate capacitor of capacitance 1 µF is charged to a potential difference of…
• A capacitor of capacitance 900 μ F is charged by a 100 V battery. The capacitor is…
• A 600 pF capacitor is charged by 200 V supply. It is then disconnected from the supply…
• A capacitor of capacitance 50 pF is charged by 100 V source. It is then connected to…
• A 5 μF capacitor is charged fully by a 220 V supply. It is then disconnected from the…
• A capacitor C is fully charged with voltage V₀. After disconnecting the voltage source…
• A 10 μF capacitor is charged to 100 V. Energy stored is x mJ. Find x.
• A sphere of capacitance 100 pF is charged to a potential of 100 V . Another identical…
• Consider a parallel plate capacitor of area A (of each plate) and separation ' d '…
• Two identical capacitors have same capacitance C. One of them is charged to the…
• A capacitor of capacitance C and potential V has energy E. It is connected to another…
• Two capacitors C₁ and C₂ are connected in parallel to a battery. Charge-time graph is…
• A parallel plate capacitor of capacitance 12.5 pF is charged by a battery connected…
• A parallel plate capacitor of capacitance 2 F is charged to a potential V, The energy…
• A parallel plate air capacitor is connected to a battery. The plates are pulled apart at…
• If the charge on a capacitor is increased by 2 C, the energy stored in it increases by…
• In the circuit shown, the energy stored in the capacitor is n μ J. The value of n is…
• Two capacitors of capacitances C and 2C are charged to potential differences V and 2V…
• A capacitor is discharging through a resistor R. Consider in time t₁, the energy stored…

Combination of Capacitors

• Effective capacitance of parallel combination of two capacitors C₁ and C₂ is 10 μF. When…
• Four capacitors each of capacitance 16 μ F are connected as shown in the figure. The…
• Three capacitors of capacitances 25 μ F, 30 μ F and 45 μ F are connected in parallel to…
• In the given circuit, C₁=2 μ F, C₂=0.2 μ F, C₃=2 μ F, C₄=4 μ F, C₅=2 μ F, C₆=2 μ F, The…
• Consider the combination of 2 capacitors C₁ and C₂ with C₂ > C₁, when connected in…
• In the circuit shown in the figure, the total charge is 750 μC and the voltage across…
• Four identical rectangular plates with length, l = 2 cm and breadth, b = 3/2 cm are…
• Space between the plates of a parallel plate capacitor of plate area 4 cm² and…
• From the circuit given below, the capacitance between terminals A and B shown in the…
• A galvanometer (G) of 2 Ω resistance is connected in the given circuit. The ratio of…
• Three parallel plate capacitors C₁, C₂ and C₃ each of capacitance 5 μ F are connected as…
• The total charge on the system of capacitors C₁=1 μ F, C₂=2 μ F, C₃=4 μ F and C₄=3 μ F…
• Two equal capacitors are first connected in series and then in parallel. The ratio of…
• The equivalent capacitance of the combination shown is :
• In the given figure, the charge stored in 6 μ F capacitor, when points A and B are…
• In this figure the resistance of the coil of galvanometer G is 2 Ω. The emf of the cell…
• A parallel plate capacitor is made up of stair like structure with a plate area A of…
• As shown in the figure, two parallel plate capacitors having equal plate area of 200 cm²…
• Two capacitors C₁ = 2 μ F and C₂ = 3 μ F are connected in parallel. The equivalent…
• A capacitor P with capacitance 10× 10⁻⁶ F is fully charged with a potential difference…

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Frequently asked questions

How many Electrostatics II — Potential & Capacitance questions are there for JEE Main?

PrepWiser has 175 Electrostatics II — Potential & Capacitance questions for JEE Main, grouped into 6 topics such as Electric Potential and Potential Energy, Equipotential Surfaces and Capacitors.

Are these Electrostatics II — Potential & Capacitance questions from previous-year JEE Main papers?

Yes — most are genuine previous-year questions from past JEE Main papers, and the rest are practice questions written to match the JEE Main pattern and difficulty.

Where can I see the answers and solutions to these Electrostatics II — Potential & Capacitance questions?

Open any Electrostatics II — Potential & Capacitance question in PrepWiser (it is free) to attempt it; most come with a step-by-step solution.