Q1)
What is an electric polarization of a dielectric? What is the effect on
capacitance of a capacitor when a dielectric of width ‘t’ is placed between the
two plates of parallel plate capacitor?
Q2)
What is electric potential? Give its SI unit. Find the expression for the
electric potential at any point due to a point charge.
Q3)
State gauss’s theorem. Use it to find electric field due infinite line of
charge. What is the effect on electric field, when charge density gets double
and distance between point and line of charge is half.
Q4) The electric field in a region is radially outward and
varies with distance r as E=250 r Vm-1Calculate the charge contained
in a sphere of radius 0.2 m centered at the origin
Q5) A
4µF capacitor is charged by a 200V supply. The supply is then disconnected and
the charged capacitor is connected to another uncharged 2µF capacitor. How much
electrostatic energy of the first capacitor is lost in the process of attaining
the steady situation?
Q6)A parallel plate capacitor with air between the plates has a
capacitance of 8 pF . The separation between the plates is now reduced by half
and the space between them is filled with a medium of dielectric constant 5.
Calculate the value of capacitance of parallel plate capacitor in second case.
Q7) Charge of 2C is placed at the centre of a cube of volume 8
cm3. What is the electric flux passing through one face?
Q8)What orientation of an electric dipole in
a uniform electric field corresponds to stable equilibrium?
Q9) Name the physical
quantity whose SI unit is JC-1.Is it a scalar or a vector quantity?
Q10) What is the
amount of work done in moving 100 µC charge between two points 5 cm apart
on an equipotential surface?
