Welcome to the Quiz!
This quiz contains 16 questions from a mix of 1 subtopics.
Which of the following factors determine the force experienced by a charged particle in a magnetic field?
magnetic field strength
velocity of the particle
charge of the particle
all of the above
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What is the direction of the force experienced by a charged particle moving perpendicular to a magnetic field?
antiparallel to the magnetic field
perpendicular to both the magnetic field and the particle's velocity
parallel to the magnetic field
in the same direction as the particle's velocity
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Which of the following equations describes the force on a current-carrying wire perpendicular to a magnetic field?
F = B I l
F = m a
F = B Q v
F = E Q
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What is the force experienced by a proton moving at a velocity of 2.0 × 106 m s-1 perpendicular to a magnetic field of strength 0.8 T? (Charge of a proton = 1.6 × 10-19 C)
1.28 × 10-13 N
5.12 × 10-13 N
3.84 × 10-13 N
2.56 × 10-13 N
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What is the radius of curvature for an electron entering a magnetic field of strength 0.5 T at a velocity of 1.5 × 107 m s-1? (Electron mass = 9.11 × 10-31 kg, electron charge = -1.6 × 10-19 C)
1.71 × 10-4 m
5.13 × 10-4 m
6.84 × 10-4 m
3.42 × 10-4 m
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In a velocity selector, which of the following conditions must be met for particles to pass through undeflected?
the magnetic field force must be greater than the electric field force.
the electric field force must be greater than the magnetic field force.
the magnetic field force and electric field force must be equal.
the magnetic field and electric field must be parallel to each other.
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Which of the following is not a component of a velocity selector?
perpendicular electric and magnetic fields
stream of particles with a range of speeds
accelerator
collimator
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What is the effect of increasing the magnetic field strength on the radius of curvature for a charged particle moving through the field?
the radius of curvature remains the same.
the effect depends on the charge of the particle.
the radius of curvature increases.
the radius of curvature decreases.
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What is the name of the device that uses perpendicular electric and magnetic fields to filter particles by speed?
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Explain how a velocity selector works and how it can be used to filter particles by speed.
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Describe the motion of a charged particle in a magnetic field and the factors that affect the force it experiences.
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A particle with a charge of 3.2×10−19C is moving through a magnetic field with a velocity of 4.0×106m s−1. The magnetic field strength is 0.2T. Calculate the magnetic force experienced by the particle.
3.20 x 10-13 N
6.40 x 10-13 N
2.56 x 10-13 N
1.28 x 10-13 N
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What is the radius of curvature for a proton (mass = 1.67×10−27kg, charge = 1.6×10−19C) moving at 5.0×106m s−1 in a magnetic field of 0.5T?
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An electron is moving at 2.5×107m s−1 perpendicular to a magnetic field of strength 1.2T. Calculate the force experienced by the electron.
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A velocity selector has an electric field strength of 1.0×104V m−1 and a magnetic field strength of 0.02T. Calculate the velocity of the particles that will pass through undeflected.
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Calculate the magnetic force on a wire of length 0.1m, carrying a current of 5A, when placed in a magnetic field of strength 0.3T perpendicular to the field.
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