A Charged Particle Moves with a Constant Speed Through a Region

question 43

Multiple Choice

A charged particle moves with a constant speed through a region where a uniform magnetic field is present.If the $\vec { B }$ field points straight upward,the magnetic force exerted on this particle will be strongest when the particle moves

• A)straight upward.
• B)straight downward.
• C)in a plane parallel to Earth's surface.
• D)upward at an angle of 45° above the horizontal.

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