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AP Physics 2
12.2 Magnetism and Moving Charges
BeginnerMCQConceptual25.4k
A two-dimensional diagram showing a region of uniform magnetic field represented by a four-by-four grid of evenly spaced small cross symbols, each labeled with a small B nearby. A small solid circle representing an electron, labeled with a minus sign inside, is positioned on the left side of the region. A straight horizontal arrow labeled v originates at the electron and points directly to the right toward the interior of the magnetic field region. No other labels, lines, text, or axes appear.
An electron moving right in a uniform magnetic field into the page.
An electron moves horizontally to the right with velocity \(\vec{v}\) through a region containing a uniform magnetic field \(\vec{B}\) directed into the page. Which of the following statements correctly identifies the direction of the magnetic force on the electron and provides the correct physical justification?

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