The electric field at a point is:
 

a. always continuous
b. continuous if there is no charge at that point
c. discontinuous only if there is a negative charge at that point
d. discontinuous if there is a charge at that point

1. (a, b)

2. (b, d)

3. (c, d)

4. (a, d)

(2) Hint: The electric field lines originate from a positive charge and end at a negative charge.

The electric field due to a charge Q at a point in space may be defined as the force that a unit positive charge would experience if placed at that point. Thus, the electric field due to the charge Q will be continuous, if there is no charge at that point. It will be discontinuous if there is a charge at that point.