 # Electrical Engineering Objective Questions { Electrostatics }

64. Three charges each of +2 C -are placed at the three corners of an equilateral triangle. It the force between any two charges is F, then net force on any charge is

65. Three small sized insulated spheres each carrying a charge +q are placed at three points on the circumference of a circle so as to form an equilateral triangle. If R is the radius of the circle, what will be the force on charge +Q placed at the centre of the circle?

66. An electron is accelerated through a potential difference of 12000 V. Its initial velocity is le ms-1. The final velocity of the electron will be

67. An electron is accelerated through 1 V. The velocity of electron is about

68. A particle carrying a charge of 10 C begins to move in a uniform electric field of strength 50 Vm-1. After travelling a distance of 1 m, the kinetic energy of the particle will be

69. A unit charge moves on an equipotential surface from point A to point B. Then

70. The dissipation factor of a good dielectric is of the order of

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