All Flashcards
What is the effect of a magnetic force on a moving charged particle?
The magnetic force causes the particle to curve, often resulting in uniform circular motion if the field is uniform and the velocity is perpendicular to the field.
What causes the aurora borealis?
Charged particles from the sun interacting with Earth's magnetic field.
What happens when a charged particle moves perpendicular to a uniform magnetic field?
The particle undergoes uniform circular motion.
What is the result of balancing electric and magnetic forces on a charged particle?
Particles with a specific velocity can be selected (velocity selector).
What is the effect of a magnetic force on a moving charged particle?
The magnetic force causes the particle to curve because the force is always perpendicular to the velocity.
What happens when a charged particle moves perpendicular to a uniform magnetic field?
The particle undergoes uniform circular motion (UCM).
What is the effect of balancing electric and magnetic forces on a charged particle?
Particles with a specific velocity can be selected.
What happens when charged particles from the sun interact with Earth's magnetic field?
The aurora borealis (northern lights) and aurora australis (southern lights) are created near the poles.
What is the effect of a magnetic field on electrons in a cathode ray tube?
The magnetic field can steer the electrons vertically.
What is the effect of an electric field on electrons in a cathode ray tube?
The electric field can steer the electrons horizontally.
What are the steps to determine the direction of magnetic force using the Right-Hand Rule for positive charges?
- Point your thumb in the direction of the positive charge's velocity. 2. Point your fingers in the direction of the magnetic field. 3. Your palm will show the direction of the force.
What are the steps to determine the direction of magnetic force using the Right-Hand Rule for negative charges?
- Point your thumb in the direction of the negative charge's velocity. 2. Point your fingers in the direction of the magnetic field. 3. Your palm will show the direction of the force. 4. Reverse the direction of the force.