Saturday, 10 March 2012

IMPORTANT QUESTIONS OF ELECTROSTATICS

                        IMPORTANT QUESTIONS
Q.1-  Give two properties of electric lines of force sketch them for an isolated positive charge ?
Q.2- Derive an expression for dipole field intensity at any point on – (a)- axial line of dipole
         (b)- equatorial line of dipole.
Q.3-Derive an expression for torque acting  on  an electric dipole in a uniform electric field.
Q.4-Define capacitance and write its S.I. unit .
Q.5- Define an expression for the capacitance  of a parallel plate capacitor.
Q.6- Prove that energy density stored in parallel plate capacitor is1/2 є0E2  where symbols have their usual meaning.
Q.7-  Derive an expression for energy stored in parallel plate capacitor . What is the form of this energy & where from it comes .
Q.8-   Find an expression for capacitance of parallel plate capacitor when dielectric slab is introduced between the plates of the capacitor .
Q.9-  It states gauss’s law in electrostatics. Using this law derive an expression for electric field due to charged spherical shell.
Q.10- Draw the level diagram of Van de graff generator . Explain the principle, working of  Van de graff generator.

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