BSc Physics SEM V 2016 17 2016-17 Physics IV Electrodynamics Question Paper - Mumbai University | munotes

(1) All questions are compulsory
(2) Figures to the right indicate full marks
(3) Symbols have usual meaning unless stated otherwise
(4) Use of logtable/non programmable calculator is allowed
(a) Attempt any one of the following:
(i) A point charge ‘q' is heid at a distance above an infinite grounded iG
plane, using method of image obtain the expréssion for
(a) Potential 'V' above the conducting plane (b) Induced surface charge
(c) Force F on the charge
(ii) Write down the expressions for potential due
(a) of 'n' discrete charges at r,
Hence obtain potential of a uniformly charged spherical shell of
(b) Attempt any one of the
An infinite plane carries a uniform surface charge 'o' find the electric field. 5
(ii) Show that for electrostatic field curl 5
(a) Attempt any one of the’ following:
(i) Obtain the expression for potential due to polarized object and hence explain 10
the terms surface bound charge density and volume bound charge
(ii) Starting from Biot-Savarts law obtain the expression for VB and 10
(b) Attempt any one of the following:
(i) Obtain the expression V.D =p, for dielectrics. 5
ora dipole P in a uniform electric field E show that the net torque acting 5
any one of the following:
that fora linear homogeneous dielectric the volume charge 4
of free charge 1s directly proportional to the volume charge density
A long solenoid consists of 1000 turn per meter of its length, carries 4
4,5A current. Find magnetic field inside the solenoid
infinite solenoid (n turns per unit length) carries grrent Lis filled with
material of Find magnetic field inside solenoid