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#1 Class 12 Physics Electrostatic Potential and Capacitance 2022 Short 3M CBSE
A short electric dipole has dipole moment 16×10⁻⁹ C·m. Find the electric potential at a point 0.6 m from centre, on a line making 60° with the dipole axis.
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#2 Class 12 Physics Electrostatic Potential and Capacitance 2023 Short 5M CBSE
Derive the expression for the electric potential due to an electric dipole at an axial point.
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#3 Class 12 Physics Electrostatic Potential and Capacitance 2022 Short 3M CBSE
Calculate the potential at the centre of a square ABCD of each side √2 m due to charges 2, −2, −3 and 6 µC at the four corners.
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#4 Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 3M CBSE
(A) Calculate the potential at point P due to charge 4×10⁻⁷ C located 9 cm away. (B) Obtain the work done in bringing charge 2×10⁻⁹ C from infinity to point P. Does the answer depend on the path?
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#5 Class 12 Physics Electrostatic Potential and Capacitance 2020 Short 3M CBSE
What do you mean by polar molecules? What happens to them when electric field is applied?
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#6 Class 12 Physics Electrostatic Potential and Capacitance 2021 Short 3M CBSE
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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#7 Class 12 Physics Electrostatic Potential and Capacitance 2022 Long 5M CBSE
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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#8 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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#9 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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#10 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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#11 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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#12 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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#13 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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#14 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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#15 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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#16 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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#17 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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#18 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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#19 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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#20 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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