54) This problem asks us to find the force acting on the electron. To find the magnitude we can simply plug our values into of magnetic force equation.
Since we have the magnetic field, the charge of the electron, and the velocity of the electron, we can use the first form of the equation. Finally, to find the magnitude all we need to do is plug in our given values.
To find the direction of the force, we can use the right-hand rule. The right-hand rule would tell us that force acts in the -y-direction, but since the particle has a negative charge, the force acts in the opposite direction, the +y-direction.
Answer: D
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