how does the angle of dip vary from equator to poles?
What are the properties of Electric Lines of Force?
What is Ohm's law in vector form.........???
derive an expression for the total work done in rotating an electric dipole through an angle theta in a uniform electric field.
Two point charges of +16 micro coulomb and -9 micro coulomb are placed 8cm apart in air. Determine the position of the point at which the resultant field is zero.
Two capacitors C1 and C2 are charged to potential V1 and V2 resp. and then connected in parallel. Calculate common potential, charge on each capacitor and energy in the system after connection??
A nuclear charge(Ze) is non uniformly distributed within a nucleus of Radius R .The charge density rho(r) is dependent only on the radial distance r from the centre of the nucleus as shown in the fig.The electric field is only along the radial direction.
Q1=FOr a =0,the value of d would be?Ans=3(Ze)/pie *R3
Q2=Show that at r=R the electric field is independent of a?
Find the expression for the capacitance of a parallel plate capacitor of area A and plate separation d if
i) a dielectric slab of thickness t, and
ii) a metllic slab of thicknes t
(where t<d) are introduced one by one between the platesof the capacitor. In which case would the capacitance be more and why?
An electic dipole of length 2cm is placed with its axis making an angle 60 degree with respect to a uniform electric field of 105 N/C. If it experiences a torque of 13.856 Nm, calculate the- magnitude of the charge on the dipole & PE of the dipole.
Charge q is uniformly distributed over a thin half ring of radius R .The electric field at the centre of the ring is?
Name the physical quantity whose SI unit is Newton Coulomb-1.
WHAT ARE THE PROPERTIES OF EQUIPOTENTIAL SURFACES ?????????
A parallel plate capacitor is charged by a battery. After sometime the battery is disconnected and a dielectric slab of dielectric constant K is inserted in between the plates. How would i) The capacitance ii) The electric field between the plates and iii) The energy stored in the capacitor be affected? Give reasons with necessary equations.
Two charges of 2.4 micro C and - 2.4 micro C are at a distance 2.5 * 10 ^ -3 m apart from each other . Determine the magnitude of the electric field in the broad side on position at a distance of 0.30 m from this dipole . If the dipole be rotated through 90 degree . then what will be the intensity of the field.??
A 10 micro faran capacitor is charged by a 30V dc supply & then connected across an uncharged capacitor of 50 micro faran. Calculate the(1) final potential difference across the combination & the (2)initial & final energies. How will you account for the difference in energies?
ChargeQ is distributed over two concentric hollow spheres of radii R1 and R2 (R2>R1) such that the surface charge densities areequal. Find the electric potential at the common centre.
An electric dipole is held in a uniform electric field.
a) Show that the net force acting on it is zero.
b) The dipole is aligned parallel to the field.Find the work done in rotating through angle of 180 degree
A spherical conducting shell of inner radius r1 and outer radius r2 has a charge Q. A charge q is placed at the centre of the cell.
(a) What is the surface charge density on the (i) inner surface (ii) outer surface of the shell.
(b) Write the expression for electric field at a point x r2 from the centre of the shell.
Calculate the amount of work done in rotating a dipole, of dipole moment 3 x 10-8Cm, from its position of stable equilibrium to the position of unstable equilibrium of uniform electric field 104N/C..
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