An electron traveling horizontally enters a region where a uniform electric field is directed upward. What is the direction of the force exerted on the electron once it has entered the field?

Question

Quizplus · Accepted Answer

The direction of the force exerted on an electron in a uniform electric field can be determined using the right-hand rule. If the thumb points in the direction of the electric field and the fingers point in the direction of the electron's velocity, the palm of the hand will point in the direction of the force. In this case, the thumb points upward (direction of electric field) and the fingers point horizontally to the right (direction of electron's velocity). Therefore, the force will be directed downward (opposite direction to the palm of the hand).

An Electron Traveling Horizontally Enters a Region Where a Uniform