Objective Electrostatics Questions and Answers pdf

71. The dielectric constant (relative permittivity) of glass is given by
(a) 0.1 to 0.4
(b) 0.5 to 1.0
(c) 2.0 to 4.0
(d) 5 to 100
Ans: d

72  capacitors are mainly used for radio frequency tuning.
(a) Paper
(b) Air
(c) Mica
(d) Electrolytic
Ans: b

73. capacitors can be used only for D.C.
(a) Air
(b) Paper
(e) Mica
(d) Electrolytic
Ans: d

74. capacitors are used in transistor circuits.
(a) Ceramic
(b) Paper
(c) Air
(d) Electrolytic
Ans: a

75. capacitors are used for audio frequency and radio frequency coupling and tuning.
(a) Air
(b) Mica
(c) Plastic film    
(d) Ceramic
Ans: b

76. The inverse of capacitance is called
(a) reluctance
(b) conductance
(c) susceptance  
(d) elastance
Ans: d

77. When the dielectric is homogeneous,the potential gradient is
(a) uniform
(b) non-uniform
(c) zero
(d) any of the above
Ans: a

78. 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
Ans: b

79. ________field is associated with the capacitor.
(a) Electric
(b) Magnetic
(c) Both (a) and (b)
(d) None of the above
Ans: a

80. 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
Ans: d

Read More Questions:
Electrostatics MCQs Part1

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