Answer
(a) The electric field vector at any given point is aligned with the tangent to the field line passing through that point. At point A, the electric field points downward, in the negative $y$-direction.
(b) The strength of the electric field decreases where the field lines are more widely spaced. At point P, the field is weaker due to the greater spacing of the field lines.
Work Step by Step
the reading in the 16.4 section on fields vectors. no specifics required.
