Full marks: 45
Pass Marks: 20

VSQ any seven $[7 \times 1=7]$
1) Define Electric Potential.
2) What is the net charge on a charged capacitor?
3) A conductor carries a charge $-9.6\times 10^{-17}$. How many electrons are in excess or deficient on the conductor.
4) What is current density? Is it a vector or Scalar quantity?
5) Define angle of dip and angle of decilnation.
6) Define magnetic moment.
7) What do you mean by shunt?
8) Define 1 Henry.
9) Define Magnetic Flux.
10) Name the physical quantity whose unit is Weber.

SAQ any five $[5 \times 2=10]$
1) State coulomb's law.
2) State Gauss's theorem
3) State Kirchoff's Law.
4) State Biot-Savart Law.
5) State Ampere's Circuital Law.
6) State Faraday's Law of electromagnetic Induction.
7) State Lenz's Law.

LAQ any seven $[7\times 4=28]$
1) Derive an expression for the potential energy of an electric dipole of dipole moment $\vec P$ in an electric field $\vec E$
2) Find an expression for the electric field strength at a distant point situated along the equatorial line of an dipole.
3)Using Gauss's theorem derive the expression for the electric field intensity at apoint outside a uniformly charged thin spherical shell of radius R and surface charge density $\sigma \ Cm^2$.
4) Derive an expression for the energy stored in a parallel plate capacitor.
5) Derive an expression for the energy stored in an inductor.
6) Establish a relation between electric current and drift velocity.
7) Draw a circuit diagram of meter bridge and write the mathematical relation used to determine the value of an unknown resistance.
8) Derive an expression for the torque acting on a rectangular current carrying loop kept in a uniform magnetic field B. Indicate the direction of torque acting on it.
9) Derive an expression for the magnetic field at a point on the axis of a current carrying circular loop.
10) Derive an expression for the torque on a magnetic dipole in an uniform magnetic field.