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#1 Class 12 Physics Electrostatic Potential and Capacitance 2023 Long 5M CBSE
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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#2 Class 12 Physics Electrostatic Potential and Capacitance 2019 Short 3M CBSE
Show that the capacitance of a spherical capacitor is more than that of a spherical conductor.
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#3 Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 3M CBSE
Show that the capacitance of an insulated spherical conductor is directly proportional to the radius of the spherical conductor.
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#4 Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 3M CBSE
Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
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#5 Class 12 Physics Electrostatic Potential and Capacitance 2022 Short 5M CBSE
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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#6 Class 12 Physics Electrostatic Potential and Capacitance 2024 Short 5M CBSE
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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#7 Class 12 Physics Electrostatic Potential and Capacitance 2023 Short 5M CBSE
Derive an expression for the capacitance of a parallel plate capacitor with air present between the two plates.
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#8 Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 3M CBSE
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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#9 Class 12 Physics Electrostatic Potential and Capacitance 2022 Mcq 1M CBSE
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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#10 Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 2M CBSE
Electrostatic potential is constant throughout the volume of a conductor and has the same value on its surface. Why?
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#11 Class 12 Physics Electrostatic Potential and Capacitance 2019 Short 2M CBSE
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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#12 Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 2M CBSE
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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#13 Class 12 Physics Electrostatic Potential and Capacitance 2022 Short 3M CBSE
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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#14 Class 12 Physics Electrostatic Potential and Capacitance 2024 Long 5M CBSE
(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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#15 Class 12 Physics Electrostatic Potential and Capacitance 2023 Long 2M CBSE
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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#16 Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 2M CBSE
For any charge configuration, equipotential surface through a point is normal to the electric field. Justify.
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#17 Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 2M CBSE
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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#18 Class 12 Physics Electrostatic Potential and Capacitance 2018 Short 2M CBSE
Why is there no work done in moving a charge from one point to another on an equipotential surface?
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#19 Class 12 Physics Electrostatic Potential and Capacitance 2019 Short 2M CBSE
A hollow metal sphere of radius 5 cm is charged such that potential on its surface is 10 V. What is the potential at the centre of the sphere?
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#20 Class 12 Physics Electrostatic Potential and Capacitance 2020 Mcq 1M CBSE
A parallel plate capacitor with oil between the plates (dielectric constant K = 2) has a capacitance C. If the oil is removed, then capacitance of the capacitor becomes
A. C/2
B. 2C
C. C/4
D. 4C
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