Question

Assume the dipole is an infinitesimal square, of side e (if it's not, chop it up into squares).

a) True
b) False
c) Maybe
d) Not applicable

Answer 1

The charge must be negative.

Step-by-step explanation:

The correct answer is b) false. If a point charge has electric field lines that point into it, the charge must be negative. The direction of the electric field lines represents the direction of the force that a positive test charge would experience if placed in the field. In the case of a positive point charge, the electric field lines would point outward, not inward.