Achiever Study Plan ESE-2018: Electromagnetic Field Theory Quiz 5

The field strength at a point of finite distance from an infinitely long straight uniformly charged conductor is obtained by considering the radial (R) component and the longitudinal (L) component of the forces acting on a unit charge at the point, by the charges on the elemental length of the conductor. The resutltant field strength is

A parallel-plate air capacitor as shown below has a total charge Q and a breakdown voltage V. A slab of dielectric constant 6 is inserted as shown. The maximum breakdown voltage and the charge at this voltage respectively would be

In practice, Earth is chosen as a place of zero electric potential because it

Consider the following statements associated with the basic electrostatic properties of ideal conductors :
1) The resultant field inside is zero
2) The net charge density in the interior is zero
3) Any net charges reside on the surface
4) The surface is always equipotential
5) The field just outside is zero
Which of the above statements are correct?

According to Gauss's Law, the surface integral of the normal component of electric flux density D over a closed surface containing charge Q is

The electrostatic force of repulsion between two α-particles of charges 4.0 × 10^–19 C each, and separated by a distance of 10^–10 cm is
(Given 8.854 × 10^–12 Nm²/Coul²)