Back to Magnetic Fields, Field Lines, and Force — Problem 4 · Task Set 12

Exercises: Magnetic Fields, Field Lines, and Force

Work through each section in order. Show your work where indicated. For direction problems, state your answer as a cardinal direction (up, down, left, right, into page, out of page) or compass direction as appropriate.

Grade 11·22 problems·~30 min·OpenStax Physics (High School)·section·sec-20-1

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Fluency Practice

An electron ( $q = 1.6 \times 10^{-19}\ \text{C}$ , charge magnitude) moves at $v = 3.0 \times 10^6\ \text{m/s}$ perpendicular to a magnetic field of $B = 0.050\ \text{T}$ . Calculate the magnitude of the magnetic force on the electron in newtons. The velocity is perpendicular to the field ( $\theta = 90\degree$ ).