Example 29.1 An Electron Moving in a Magnetic Field SOLVE IT Conceptualize Recal

Question

Example 29.1 An Electron Moving in a Magnetic Field SOLVE IT Conceptualize Recall that the magnetic force on a charged particle is perpendicular to the plane formed by the velocity and magnetic field vectors. Use one of the right-hand rules to convince yourself that the direction of the force on the electron is downward in the figure.

Categorize We evaluate the magnetic force using the magneticversion of the particle in a field model. Analyze Use the following equation to find the magnitude of the magnetic force: MASTER ITHINTS: GETTING STARTED | I'M STUCK!
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The magnetic force B acting on the electron is in the negative z direction when and lie in the xy plane.

Explanation / Answer

the magnetic force on the electron is

F = q x v x B x sinA

where q = 1.6 x 10^-19 C,v = 7.4 x 10^6 m/s,B = 0.025 T and A = 60o

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