Electrostatics
Q.1 Using Gauss' theorem, obtain an expression for the electric
field intensity at a point outside the charged sphere
Q.2 What do you mean by polar molecules and nonpolar
molecules? Give one example of each.
Q.3 With the help of neat diagram, explain how nonpolar dielectric
material is polarised in external electric field of increasing intensity.
Define polarisation in dielectrics.
Q.4 Obtain an expression for equivalent capacitance when three
capacitors of capacities 𝑪𝟏, 𝑪𝟐 and 𝑪𝟑 are connected in parallel.
Q.5 Derive an expression for resultant capacity of combination of
two capacitors in series.
Q.6 Define capacitance of a capacitor and its S.I. unit.
Q.7 Derive an expression for the capacity of a parallel plate
capacitor filled with dielectric. How to increase the capacity of a
parallel plate capacitor?
Q.8 Derive an expression for the energy stored in a charged
capacitor. Express it in different forms
Q.9 With the help of a neat diagram, describe the construction and
working of 𝑽an de Graaff generator.