A Charged Particle Moving Along the +X-Axis Enters a Uniform $\vec { B }$

question 102

Multiple Choice

A charged particle moving along the +x-axis enters a uniform $\vec { B }$ field pointing along the +z-axis.Because of an electric field along the +y-axis,the charge particle does not change velocity.What is the sign of this particle?

• A)positive
• B)negative
• C)The particle could be either positive or negative.
• D)None of the above choices is correct.

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