Test: Electrostatics - 1 - Electronics and Communication Engineering (ECE) MCQ

Five equal point charges of Q = 20 x 10^-9C, are placed at x = 2,3,4,5 and 6 cm. The electric potential at origin will be

What is the equivalent capacitance of a parallel plate capacitor having two dielectrics, ∈_r1 = 1.5 and ∈_r2 = 3.5, each comprising one-half the volume as shown in figure below with A = 2 m² and d = 1 mm?

Four point charges 1, - 2, -3 and 4 μC are located on the x-axis at x = 1, 2, 3 and 4 metre respectively. The energy stored in the field is

The electric field strength at a point in front of an infinite sheet of charge is

Assertion (A): If all the points in space which have the same potential are jointed, then equipotential surfaces are obtained.
Reason (R): The field and the equipotential surfaces are orthogonal to each other.

Consider the following statements associated with various medias encountered in electostatics:
1. An isotropic media is one whose properties are independent of direction
2. A homogeneous media is one whose physical characteristics vary from point-to- point.
3. A non-homogenous media is one whose physical characteristics do not vary from point-to-point:
4. A linear media is a one in which the electric flux density is proportional to the electric field intensity.

Which of the above statements are correct?

Assertion (A): Continuity of current equation is derived from law of conservation of charge.
Reason (R): Continuity of current equation states that there can be no accumulation of charge at any point.