Question

An electron has an initial speed of 6.64 106 m/s in a uniform 5.73 105 N/C strength electric field. The field accelerates the electron in the direction opposite to its initial velocity.

(a) What is the direction of the electric field? opposite direction to the electron's initial velocity same direction as the electron's initial velocity not enough information to decide

(b) How far does the electron travel before coming to rest? m

(c) How long does it take the electron to come to rest? s

(d) What is the electron's speed when it returns to its starting point? m/s

Answer 1

(A) The electric field accelerates the electron in the direction opposite to its initial velocity, so the electron moving towards the negative plate and electric field is in the direction of the electron's initial velocity (from positive plate to negative plate).

(B)