Podcast
Questions and Answers
What is the relationship between the energy stored in two conductors when they share charges?
What is the relationship between the energy stored in two conductors when they share charges?
- There is usually no change in energy.
- There is a loss of energy. (correct)
- The energy is doubled.
- There is always a gain of energy.
Which law states that the electrostatic force between two point charges is directly proportional to the product of their charges?
Which law states that the electrostatic force between two point charges is directly proportional to the product of their charges?
- Faraday's law
- Coulomb's law (correct)
- Gauss's theorem
- Ampere's circuital law
What is the expression for the effective capacitance when capacitors are connected in series?
What is the expression for the effective capacitance when capacitors are connected in series?
- $C_{eff} = C_1 + C_2$
- $C_{eff} = C_1 - C_2$
- $C_{eff} = C_1 C_2$
- $\frac{1}{C_{eff}} = \frac{1}{C_1} + \frac{1}{C_2}$ (correct)
What does Gauss's theorem relate to in electrostatics?
What does Gauss's theorem relate to in electrostatics?
Which of the following is NOT a characteristic of a parallel plate capacitor?
Which of the following is NOT a characteristic of a parallel plate capacitor?
Flashcards
Coulomb's Law
Coulomb's Law
A concept in electrostatics describing the force between two stationary charged objects. It states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
Gauss's Theorem
Gauss's Theorem
A fundamental theorem in electrostatics that relates the electric flux through a closed surface to the enclosed electric charge. It simplifies calculating the electric field in various situations.
Capacitor
Capacitor
A device that stores electric charge in an electric field. It consists of two conductive plates separated by a non-conductive material called a dielectric.
Capacitance
Capacitance
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Van de Graff Generator
Van de Graff Generator
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Study Notes
Class 12 Physics - Important Questions
- Unit 1: Electrostatics
- Question 1: Derive an expression for the electric field at a point on the axial position of an electric dipole.
- Question 2: Derive an expression for the electric field at a point on the equatorial position of an electric dipole.
- Question 3: Describe the principle, construction, and working of a Van de Graff generator.
- Question 4: Derive an expression for the energy stored in a capacitor. Demonstrate how a loss of energy occurs when conductors sharing charges come into contact.
- Question 5: Derive the effective capacitance when capacitors are connected in series and parallel.
- Question 6: Explain the principle of a capacitor and derive an expression for the capacitance of a parallel plate capacitor.
- Question 7: State Gauss's theorem and apply it to determine the electric field due to a line of charge, a plane sheet of charge, and a charged spherical conducting shell.
- Question 8: State Coulomb's law, express it in vector form, and derive it using Gauss's theorem.
- Question 9: Derive an expression for the torque on an electric dipole in a uniform electric field.
- Question 10: Derive an expression for the work done in rotating an electric dipole in a uniform electric field.
- Question 11: Derive an expression for the energy stored (potential energy) in a dipole in a uniform electric field.
- Question 12: Derive an expression for the electrostatic potential energy of a system of point charges.
- Question 13: Derive an expression for the capacitance of a parallel plate capacitor with (a) a dielectric slab and (b) a metallic plate inserted between the plates.
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Description
Test your knowledge with this quiz on important questions from Class 12 Physics focusing on Electrostatics. Dive into concepts like electric dipoles, capacitors, and Gauss's theorem, while deriving key expressions and understanding principles. Perfect for revision before exams!
