Question

The electric field at a point is
     (A) Always continue
     (B) continuous if there is no change of that point.
     (C) discontinuous if there is a change at that point.
     (D) both (b) and (c) one correct.

Answer 1

Hint:
1. an electric field is defined as the force per unit change.
2. continuity of an electric field is defined by the presence of other change around if.

Complete step by step Solution:
Electric field is defined to be a diverse interaction between two changes at a distance from each other. One change is sound change & best change. The introduction of test change which itself has an eclectic field can be thought of as the force per unit positive change that could be external before the field is undisturbed by the presence of the test change.
The magnitude of the electric need around an electric change depends on how the change distributed in the space electric field of a mania medium always gets offset by the presence of some other change.
The electric field is a point that is continuous only taken there is no change at that find 9f there is a change at that point if it is discontinuous.

Hence option (D) which say (b) & (c) are correct.

Note:
1. Electric field is directly proportional to the amount of change; inversely proportional to the square of distance.
2. It depends on the nature of the material medium. Electric field is always less in a material medium than in vacuum.