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Previous Year Questions

PYQ Bank & Paper Generator

Board, class, subject, chapter, year-wise PYQ. Practice effectively and ace your board exams.

4,686 Questions
CBSE
#1 Class Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 3M
What do you mean by polar molecules? What happens to them when electric field is applied?
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CBSE
#2 Class Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 3M
Two charged spherical conductors of radii R₁ and R₂ are connected by a conducting wire. Find the ratio of their surface charge densities in terms of their radii.
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CBSE
#3 Class Class 12 Physics Electrostatic Potential and Capacitance 2022 Long 5M
How does electric potential vary from point to point due to a thin charged spherical shell? Draw a graph showing variation of potential with distance.
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CBSE
#4 Class Class 12 Physics Electrostatic Potential and Capacitance 2023 Long 5M
Write the working principle of a parallel plate capacitor. On what factors does the capacitance of a parallel plate capacitor depend?
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CBSE
#5 Class Class 12 Physics Electrostatic Potential and Capacitance 2019 Short 3M
Show that the capacitance of a spherical capacitor is more than that of a spherical conductor.
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CBSE
#6 Class Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 3M
Show that the capacitance of an insulated spherical conductor is directly proportional to the radius of the spherical conductor.
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CBSE
#7 Class Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 3M
Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
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CBSE
#8 Class Class 12 Physics Electrostatic Potential and Capacitance 2022 Short 5M
A capacitor of capacity C₁ is charged to potential V₀. On disconnecting the battery, it is connected with uncharged capacitor C₂. Find the ratio of energies before and after connection of switch S.
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CBSE
#9 Class Class 12 Physics Electrostatic Potential and Capacitance 2024 Short 5M
Obtain the equivalent capacitance of the network shown in figure. For a 300 V supply, determine the charge on each capacitor.
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CBSE
#10 Class Class 12 Physics Electrostatic Potential and Capacitance 2023 Short 5M
Derive an expression for the capacitance of a parallel plate capacitor with air present between the two plates.
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CBSE
#11 Class Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 3M
Charges (+q) and (−q) are placed at points A and B, which are 2L apart. C is the midpoint between A and B. What is the work done in moving a charge +Q along the semicircle CRD?
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CBSE
#12 Class Class 12 Physics Electrostatic Potential and Capacitance 2022 Mcq 1M
A uniform electric field pointing in positive X-direction exists in a region. A is origin, B is on X-axis at x = +1 cm, C is on Y-axis at y = +1 cm. Then the potential at A, B and C satisfy:
A. VA < VB
B. VA > VB
C. VA < VC
D. VA > VC
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CBSE
#13 Class Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 2M
Electrostatic potential is constant throughout the volume of a conductor and has the same value on its surface. Why?
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CBSE
#14 Class Class 12 Physics Electrostatic Potential and Capacitance 2019 Short 2M
One charge particle is moved from A→C→B and another from A→D→B in a uniform external electric field. For which charge particle more work is needed?
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CBSE
#15 Class Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 2M
A capacitor of capacitance 50 µF is charged to a potential of 1000 V. Calculate the energy stored in the capacitor.
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CBSE
#16 Class Class 12 Physics Electrostatic Potential and Capacitance 2022 Short 3M
A charge of 1 µC is placed at origin and another charge of 3 µC placed at (20 m, 0, 0) in external uniform electric field of 40 V/m î, with potential at origin = 0. Find the electrical potential energy of the system.
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CBSE
#17 Class Class 12 Physics Electrostatic Potential and Capacitance 2024 Long 5M
(A) A dielectric slab of thickness t, is introduced between the plates of parallel plate capacitor of area A and separation d (where t<d). Find an expression for the capacitance with the dielectric slab. (B) A copp...
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CBSE
#18 Class Class 12 Physics Electrostatic Potential and Capacitance 2023 Long 2M
If a charged hollow sphere and solid sphere of equal radii (aluminum and copper) are in electrostatic equilibrium, which statement is true? (A) Both have equal charges. (B) Hollow sphere has more surface charge. (C) A...
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CBSE
#19 Class Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 2M
For any charge configuration, equipotential surface through a point is normal to the electric field. Justify.
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CBSE
#20 Class Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 2M
In a certain 0.5 cm³ of space, electric potential is found to be 7 V throughout. What is the electric field in this region?
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