76. When the dielectric is homogeneous,the potential gradient is
A. uniform
B. non-uniform
C. zero
D. any of the above
A. uniform
77. The potential gradient across the material of low permittivity is than across the material of high permittivity.
A. smaller
B. greater
C. both (a) and (b)
D. none of the above
B. greater
78. ________field is associated with the capacitor.
A. Electric
B. Magnetic
C. Both (a) and (b)
D. None of the above
A. Electric
79. A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is
A. 50 joules
B. 150 joules
C. 200 joules
D. 250 joules
D. 250 joules
80. A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is
A. 62 x 105 V/m
B. 72 x 105 V/m
C. 82 x 105 V/m
D. 92 x 105 V/m
B. 72 x 105 V/m
81. Two infinite parallel plates 10 mm apart have maintained between them a
potential difference of 100 V. The acceleration of an electron placed between them is
A. 0.56 x 1015 m/s2
B. 1.5 x 1015 m/s2
C. 1.6 x 1015 m/s2
D. 1.76 x 1015 m/s2
D. 1.76 x 1015 m/s2
82. The total deficiency or excess of electrons in a body is known as
A. current
B. voltage
C. potential gradient
D. charge
D. charge
83. The relative permittivity has the following units
A. F/m
B. m/F
C. Wb/m
D. no units
C. Wb/m
84. The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as
A. pholoelectric effect
B. chemical effect
C. magnetic effect
D. induction
D. induction
85. A unit tube of flux is known as tube
A. Newton
B. Faraday
C. Michele
D. None of the above
B. Faraday
86. The number of Faraday tubes of flux passing through a surface in an electric field is called
A. electric flux
B. electric flux density
C. magnetic flux density
D. electric charge density
A. electric flux
87. The value of E within the field due to a point charge can be found with the help of
A. Faraday’s laws
B. Kirchhoff s laws
C. Coulomb’s laws
D. none of the above
C. Coulomb’s laws
88. at a point is equal to the negative potential gradient at that point.
A. Electric intensity
B. Electric flux
C. Magnetic flux
D. Magnetic flux density
A. Electric intensity
89. at a point may be defined as equal to the lines of force passing normally
through a unit cross section at that point.
A. Electric intensity
B. Magnetic flux density
C. Electric flux
D. None of the above
A. Electric intensity
90. Electric intensity at any point in an electric field is equal to the at that point.
A. electric flux
B. magnetic flux density
C. potential gradient
D. none of the above
C. potential gradient
