All Flashcards
How do you determine the direction of magnetic force on a positive charge using the right-hand rule?
- Point your thumb in the direction of the charge's velocity (v). 2. Point your fingers in the direction of the magnetic field (B). 3. Your palm indicates the direction of the magnetic force (F).
How do you determine the direction of magnetic force on a negative charge using the right-hand rule?
- Point your thumb in the direction of the charge's velocity (v). 2. Point your fingers in the direction of the magnetic field (B). 3. The opposite direction of your palm indicates the direction of the magnetic force (F).
What is the effect of placing a magnetic dipole in an external magnetic field?
The magnetic dipole experiences a torque and aligns with the external magnetic field.
What happens when a charged particle moves through a magnetic field?
The charged particle experiences a magnetic force perpendicular to both its velocity and the magnetic field.
What is the effect of increasing the velocity of a charged particle moving through a magnetic field?
The magnitude of the magnetic force on the particle increases proportionally.
What is the effect of a current-carrying wire in a magnetic field?
The wire experiences a magnetic force.
What is the cause of magnetic forces?
The movement of charged particles.
What is a magnetic dipole?
A pair of opposite magnetic poles (north and south) separated by a distance.
What is a magnetic dipole moment?
A vector quantity describing the strength and orientation of a magnetic field, with magnitude proportional to the field strength and direction from south to north.
What is the formula for the magnitude of the magnetic dipole moment?
μ = IA, where I is the current and A is the area of the loop.
What is the right-hand rule used for in the context of magnetic forces?
To determine the direction of the magnetic force on a moving charged particle in a magnetic field.
Define magnetic force.
A force exerted on a moving charged particle in a magnetic field, or between two magnetic fields.
What is the formula for the magnetic force on a moving charge?
F = q(v x B), where q is the charge, v is the velocity, and B is the magnetic field.