important questions for bihar board class 12 physics chapter 2
Important questions for Bihar board class 12 physics chapter 2
Practice these important questions for Bihar board class 12 physics chapter 2 to get more marks in your class 12 physics board exam.
Long Type-
1. Derive an expression for the capacitance of a parallel plate capacitor. If a compound dielectric medium is introduced between the plates of the capacitor, how will the capacitance of the capacitor change ?
Bihar Board -2010
2. Define capacitance and gives its SI unit. Prove that the total electrostatic energy stored in a parallel plate capacitor is \[\frac{1}{2}C{{V}^{2}}\]. Hence derive the expression for the energy density of the electric field at its base.
Bihar Board -2010
3. Find an expression for capacity of a parallel plate capacitor with compound dielectric.
Bihar Board -2016
4. Explain potential energy of a charge system . Calculate energy needed to place charge q at each corner of a square of side l .
Bihar Board -2017
5. Define capacitance of a capacitor . Derive expression for stored energy between plates of parallel plate capacitor. Show the energy - density between plates of the capacitor can be expressed as $\frac{1}{2}{{\varepsilon
}_{0}}{{E}^{2}}$ , when E= Electric field between plates .
Bihar Board -2018
6. What is electric dipole ? Find an expression for potential at any point due to an electric dipole .
Bihar Board -2019
8. Establish the expression for electric potential at a point due to a small electric dipole .
Bihar Board -2021
9 .Derive the expression for the capacity of a cylindrical capacitor. .
Bihar Board -2023
Short Type-
(1)- Write the definition of electric potential .
Bihar Board- 2022
(2)- How the potential changes with distance from a charged particle?
(3)- Surface of a charged conductor is equipotential. how?
(4)- Establish the relationship between electric field intensity and electric Potential.
Bihar Board- 2019
(5)- Why is the belt of a van de Graaff generator made of insulting material?
Bihar Board- 2009
(6)- what is the function of second plate in the parallel plate capacitor ?
Bihar Board- 2015
(7)- Give two factors which affect capacitance of a capacitor.
Bihar Board- 2014
(8)- what is the electrical energy of a capacitor of capacity C charged to potential V?
Bihar Board- 2020
(9)- What are polar and non-polar dielectrics?
(10)- How does the energy lose in redistribution of charge?
(11)- What do you mean by capacity of a conductor ?
Bihar Board- 2021
(12)- Write any two uses of capacitor .
Bihar Board- 2023
(13)- Write down the relationship between potential gradient and intensity of electric field .What is the SI unit of potential gradient ?
Bihar Board- 2023
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