Question

Using the diagram below indicate with an arrow the direction of the force on the electron...

Using the diagram below indicate with an arrow the direction of the force on the electron and

its path. (note: the plus signs indicate that the magnetic field is into the page, the arrow indicates

the direction of Motion of the electron)

                                                                +              +              +              +

               

                                                                +              +              +              +

                                                e-

                                                                +              +              +              +

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Homework Answers

Answer #1

The direction of force on the electron is given by the right hand rule.

The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F. The direction of the force F on a negative charge is in the opposite sense to that above (so pointed away from the back of your hand).

Thus the direction of the force here is downward.

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