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.

 
Choose the correct option:

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.