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Physics Electrostatics Level: High School

An electron is shot into an electric field, and enters the field at right angles to it. The field exerts a force on the electron. The direction of this force vector is:-

1)The same as the field strength vector.

2)Opposite to the field strength vector.

3)Either (1) or (2) depending on the velocity of the electron as it enters the electric field.

4)The resultant of two vectors, one parallel to and one perpendicular to the field strength vector.