d) Infinite
111: the value of ϵ the absolute permeability is …Pf/m
a) 8.854
b) 8.854*10-20
c) 8.854*10-23
d) 8.854*10-9
112: Lorentz force equation comprise…….and …..forces
a) electric, magnetic
b) mechanical, chemical
c) both a & b
d) none of these
113: Laplace’s equation has
a) two solutions
b) infinite solutions
c) no solution
d) only one solution
114: Flux per unit volume is called
a) curt
b) gradient
c) divergence
d) none of these
115: Coulomb’s law gives
a) force between two charges
b) energy between two charges
c) both
d) none of these
116: charge distribution symmetry can be 0
a) spherical type
b) cylindrical type
c) planar type
d) all of these
117: Force, electric field intensity are the examples of
a) scalar quantity
b) vector quantity
c) both
d) none of these
118: Electric Charge, Electric Potential, Energy, Temperature etc. are examples of
a) scalar quantity
b) vector quantity
c) both
d) none of these
119: ф E. dt is same as
a) ∇ × E = 0
b) ∇ . E = 0
c) V × D = 0
d) V. D = 0
120: Poisson’s equation is given as
a) E = -∇2V
b) ∇2V = ρuv
c) ∇2V = 0
d) All
121:6 magnetic flux density is analogous to
a) Magnetic induction
b) Electric field strength
c) Both a & b
d) Electric flux density
122: total flux passing through a closed surface held in a magnetic field
a) Infinity
b) Zero
c) Unity
d) None of these
123: magnetic vector potential for volume current is expressed as
a) B = ∇ ×A
b) A = ∇ ×D
c) B = ∇ . A
d) A = ∇ . B
124: ….. can be obtained from vector magnetic potential
a) Magnetic field intensity
b) Magnetic flux density
c) Both a & b
d) None of these
125: magnitude of dipole moment is given as
a) qd
b) q/d
c) d/q
d) none of these
126: charge distribution symmetry can be of
a) spherical type
b) cylindrical type
c) planar type
d) all of these
127: curl of electro static field is
a) infinity
b) 1
c) 0
d) None of these
128: as per stock’s theorem , H the magnetic field intensity is
a) ∞
b) 1
c) 0
d) None of these
129: the Biot_savart’s law is a general modification of
a) Kirchhoff’s law
b) Lenz’s law
c) Ampere’s law
d) Faraday’s law
130: according to Ampere’s law
a) Total electric flux is equal to electric charge
b) Total magnetic flux is equal to electric charge
c) Total magnetic flux is equal to current passing
d) None of these
