Field Due to a Long Wire: a Negatively Charged Particle

question 72

Multiple Choice

Field due to a long wire: A negatively charged particle is moving to the right, directly above a wire having a current flowing to the right, as shown in the figure. In which direction is the magnetic force exerted on the particle?

• A) into the page
• B) out of the page
• C) downward
• D) upward
• E) The magnetic force is zero since the velocity is parallel to the current.

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Definitions:

Specialized Cell

A cell that is uniquely suited to perform a particular function, such as a neuron in the nervous system or a red blood cell in the circulatory system.

Nervous System

The part of an organism that coordinates its actions by transmitting signals to and from different parts of its body.

Neuron

A specialized cell transmitting nerve impulses; the basic building block of the nervous system.

Cell Membrane

A biological membrane that separates the interior of all cells from the outside environment, controlling the passage of substances in and out of the cell.