A Charged Particle (M = 5 $\mu$ C) Moves Horizontally at a Constant Speed of 30 Km/s

question 41

Multiple Choice

A charged particle (m = 5.0 g, q = -70 $\mu$ C) moves horizontally at a constant speed of 30 km/s in a region where the free fall gravitational acceleration is 9.8 m/s2 downward, the electric field is 700 N/C upward, and the magnetic field is perpendicular to the velocity of the particle.What is the magnitude of the magnetic field in this region?

• A)47 mT
• B)zero
• C)23 mT
• D)35 mT
• E)12 mT

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