Mass Spectrometer

The video tutorial explains the workings of a mass spectrometer, focusing on its two main components: the velocity selector and the deflection chamber. It details how charged particles are influenced by electric and magnetic fields, using the right-hand rule to determine force directions. The tutorial also covers the conditions for particles to pass through the velocity selector and how they move in circular paths within the deflection chamber. Finally, it discusses how the mass spectrometer determines the mass-to-charge ratio of particles, highlighting its importance in physics and potential applications in discovering new particles.

What are the two main components of a mass spectrometer?

• Electric field and magnetic field

• Positive charge and negative charge

• Velocity selector and deflection chamber

• Coulomb force and magnetic force

In the velocity selector, what rule is used to determine the direction of the magnetic force on a charged particle?

• Left-hand rule

• Right-hand rule

• Newton's second law

• Coulomb's law

How does the direction of the electric force on a negative charge compare to that on a positive charge in the velocity selector?

• It is twice the force on the positive charge

• It is perpendicular to the positive charge

• It is opposite to the positive charge

• It is the same as the positive charge

What condition must be met for a charged particle to pass through the velocity selector with constant velocity?

• The velocity must equal the ratio of the electric field to the magnetic field

• The magnetic field must be zero

• The charge must be negative

• The electric field must be zero

What happens to charged particles in the deflection chamber?

• They move in circular paths

• They accelerate indefinitely

• They stop moving

• They move in straight lines

In the deflection chamber, what is the relationship between the magnetic force and the velocity of a charged particle?

• They are equal

• They are opposite

• They are perpendicular

• They are parallel

How is the mass-to-charge ratio of a particle determined in a mass spectrometer?

• By measuring the electric field

• By measuring the magnetic field

• By using the radius of curvature and magnetic field

• By using the velocity of the particle