Assume that a uniform magnetic field is directed into this page. If an electron is released with an initial velocity directed from the bottom edge to the top edge of the page, which of the following describes the direction of the resultant force acting on the electron?

a. out of the page
b. to the right
c. to the left
d. into the page.

c. to the left

Explanation:

The magnetic force acting on an electron is given by the following formula:

In this case, the velocity is in the upward direction, and the magnetic field is into the page. Applying the right-hand rule gives the direction of the force.

- Point your index finger towards the direction of v.

- Point your middle finger towards the direction of B.

- Your thumb will give the direction of F, which is to the left.

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