Question

A uniform E-field acts along the +x axis. A proton is injected into the field along the -x axis. What occurs? A) The proton speeds up. B) The proton slows down. C) The proton begins to move parabolically. D) The proton begins to move in a circle.

A uniform E-field acts along the +x axis. An electron is injected into the field along the -x axis. What occurs? A) The electron speeds up. B) The electron slows down. C) The electron begins to move parabolically. D) The electron begins to move in a circle.

A uniform E-field acts along the +y axis. A proton is injected into the field along the +x axis. What occurs. A) The proton speeds up. B) The proton slows down. C) The proton begins to move parabolically D) The proton both speeds up and moves parabolically E) The proton both slows down and moves parabolically.

Answer 1

1) force on the proton will be along the direction of field as it has positive charge

option b is correct

2) electron has negative charge therefore force on it will act in the opposite direction of field

option a is correct

3) velocity of proton along x axis will be constant and velocity of it along y axis will increase from zero, therefore motion of the proton will be like projectile.

Option c is correct