A Charged Particle Moving Along the +X-Axis Enters a Uniform

question 115

Multiple Choice

A charged particle moving along the +x-axis enters a uniform magnetic field pointing along the +z-axis.A uniform electric field is also present.Due to the combined effect of both fields,the particle does not change its velocity.What is the direction of the electric field?

• A)along the -y-axis
• B)along the +y-axis
• C)along the -x-axis
• D)along the +x-axis
• E)along the -z-axis

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