41. The electric field at a point situated at a distance d from straight charged conductor is
42. capacitors are used for audio frequency and radio frequency coupling and tuning.
43. . . . . . . . . at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.
44. When a dielectric is placed in an electric field the field strength
45. The force between two charges is 120 N. If the distance between the charges is doubled, the force will be
46. Which of the following materials has the highest value of dielectric constant?
47. at a point is equal to the negative potential gradient at that point.
48. The sparking between two electrical contacts can be reduced by inserting a
49. The units of volume charge density are
50. What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ?
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