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Electrostatic Potential, Potential Energy and Capacitance - ISC Class 12 Physics Questions with Answers

41 past-paper questions on Electrostatic Potential, Potential Energy and Capacitance from ISC Class 12 Physics papers (2027-2018), newest first. Open one to see its answer.

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A negatively charged thundercloud above the earth’s surface may be perceived as a parallel plate capacitor. Its capacitance is… 2027 · 2 marks · Numerical
A tiny bird carrying a charge of $q = 8 \times 10^{-17}\text{ C}$ dives vertically down towards a large positively charged… 2027 · 2 marks · Numerical
Obtain an expression for capacitance of a parallel plate capacitor having dielectric slab of thickness t between its plates… 2027 · 3 marks · Derivation
You are provided with three identical capacitors, each of capacitance $12\ \mu\text{F}$. Calculate the range (minimum to maximum)… 2026 · 2 marks · Numerical
A positively charged honeybee ($q_{1} = +4e$) is attracted towards a flower pollen ($q_{2} = -6e$). When the bee is… 2026 · 1 mark · MCQ
You are provided with three identical capacitors, each of capacitance 'C'. If $C_{p}$ is equivalent capacitance when they are… 2026 · 2 marks · Numerical
Find the capacitance of the following combinations between terminals A and B. Area of each plate is A and separation between… 2026 · 2 marks · Short answer
Obtain an expression for electric potential (V) at a point near a point charge ‘Q’. (Recall) 2026 · 3 marks · Derivation
How much work is done in carrying a charge 'q' along a circular arc, at the centre of which there is a fixed point charge 'Q'? 2026 · 1 mark · Numerical
Calculate work done in moving a point charge 'q' through a distance 'd' along perpendicular bisector of an electric dipole, which… 2026 · 1 mark · Numerical
Two identical capacitors, each of capacitance C are connected to a battery as shown in Figure 5 below. Calculate the equivalent… 2025 · 2 marks · Short answer
What is the effect on capacitance of a parallel plate capacitor if the distance between its plates is increased? How will… 2025 · 2 marks · Short answer
A dielectric slab of dielectric constant $K$ and thickness $t$ is introduced between the two plates of a capacitor of… 2025 · 2 marks · Short answer
The given graph shows the variation of charge on plates (q) versus the potential difference (V) between the plates of two… 2025 · 1 mark · Short answer
The electric field strength is greatest at point A and reduces from A to E. The diagram below shows the equipotential surfaces in… 2025 · 1 mark · Assertion-reason
Three identical point charges, each equal to Q, are situated at the three vertices of an equilateral triangle MNO, having each… 2025 · 2 marks · Short answer
An alpha particle is made to move through two plates 10 cm apart. The speed with which it enters the gap in the first plate is… 2025 · 3 marks · Long answer
A student wants to place three charges ‘-q’, ‘Q’, and ‘-q’ in such a way that the potential energy of the system is zero. The… 2025 · 2 marks · Numerical
The computer’s keyboards make use of capacitors at the base of their keys (as shown in the diagram). Each key is connected to a… 2025 · 3 marks · Long answer
In an electric dipole, what is the locus of a point having zero potential? 2024 · 1 mark · Short answer
Obtain an expression for equivalent capacitance C when three capacitors $C_1$, $C_2$ and $C_3$ are connected in series. 2024 · 3 marks · Derivation
Calculate equivalent capacitance of the circuit shown in Figure 1 given below: 2023 · 2 marks · Numerical
What is meant by an equipotential surface? 2023 · 1 mark · Short answer
Three point charges of $50\text{ nC}$ each are kept at the vertices of an equilateral triangle having each side $= 3\text{ m}$… 2023 · 2 marks · Numerical
You are provided with many identical capacitors each of capacitance $100\\,\mu\text{F}$. How will you connect a minimum number of… 2023 · 2 marks · Drawing
In an electric dipole, what is the locus of a point having zero potential? 2023 · 1 mark · Short answer
Calculate electric potential at a point P which is at a distance of $9\text{ cm}$ from a point charge of $50\mu\text{C}$. 2023 · 2 marks · Numerical
Three capacitors $C_1 = 3\ \mu\text{F}$, $C_2 = 6\ \mu\text{F}$ and $C_3 = 10\ \mu\text{F}$ are connected to a $50\text{ V}$… 2022 · 1 mark · MCQ
An electric dipole of moment $\vec{p}$ is placed in a uniform electric field $\vec{E}$. It has maximum (negative) potential… 2022 · 1 mark · MCQ
Three capacitors, each of capacitance C, are connected in series. Their equivalent capacitance is Cs. The same three capacitors… 2022 · 1 mark · MCQ
The charges $q_1 = 3\ \mu\text{F}$, $q_2 = 4\ \mu\text{F}$ and $q_3 = -7\ \mu\text{F}$ are placed on the circumference of a… 2022 · 1 mark · MCQ
Three equal charges of $5.0\ \mu\text{C}$ each, are placed at the three vertices of an equilateral triangle of side… 2022 · 1 mark · MCQ
A parallel plate capacitor of plate area $A = 600\text{ cm}^2$ and plate separation $d = 2.0\text{ mm}$ is connected to a dc… 2022 · 2 marks · Short answer
A parallel plate capacitor is charged by a battery, which is then disconnected. A dielectric slab having dielectric constant… 2020 · 3 marks · Short answer
A point charge ‘q’ is kept at each of the vertices of an equilateral triangle having each side ‘a’. Total electrostatic potential… 2020 · 1 mark · MCQ
Three capacitors of capacitance $C_1 = 3\\ \mu\text{F}$, $C_2 = 6\\ \mu\text{F}$ and $C_3 = 10\\ \mu\text{F}$, are connected to a… 2019 · 3 marks · Numerical
Define equipotential surface. 2019 · 1 mark · Short answer
Obtain an expression for electric potential ‘V’ at a point in an end-on position i.e. axial position of an electric dipole. 2019 · 3 marks · Derivation
Obtain an expression for electric potential ‘$V$’ due to a point charge ‘$Q$’ at a distance $r$. 2018 · 3 marks · Derivation
A parallel plate capacitor is charged by a battery; which is then disconnected. A dielectric slab is now introduced between the… 2018 · 3 marks · Short answer
Deduce an expression for equivalent capacitance C when three capacitors $C_1$, $C_2$ and $C_3$ are connected in parallel. 2018 · 3 marks · Derivation

Electrostatic Potential, Potential Energy and Capacitance - ISC Class 12 Physics Questions with Answers

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