Suppose a region of space has a uniform electric field, directed towards the rig

Question

Suppose a region of space has a uniform electric field, directed towards the right, as shown in the figure. Which statement about the electric potential is true? A) The potential at all three locations (A, B, C) is the same because the field is uniform. B) The potential at point A is the highest, the potential at point B is the second highest, and the potential at point C is the lowest. The potential at points A and B are equal, and the potential at point C is higher than the potential at point A. The potential at points A and B are equal, and the potential at point C is lower than the potential at point A. Which statements are true for an electron moving in the direction of an electric field? (There may be more than one correct choice.) A) Its potential energy increases as its kinetic energy decreases. B) Its electric potential energy decreases as it goes from high to low potential. C) Its electric potential energy increases as it goes from high to low potential. D) Its kinetic energy decreases as it moves in the direction of the electric field. E) Its kinetic energy increases as it moves in the direction of the electric field.

Explanation / Answer

Here ,
as the potential , E = - dV/dx

the potential will be same when we move perpendicular to the electric field

and the electric potential will be decrease in the direction of electric field .

hence , the potential at A and B will be same and the potential at C will smaller

the correct option is D)

6)

for the electron moving in the electric field

the direction of force on electric field will be oposite to the electric field

hence ,the correct option is

A) , D

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