All Flashcards
What is the effect of a charged particle moving perpendicular to a uniform magnetic field?
The particle undergoes cyclotron motion, moving in a circular path.
What happens to the magnetic field strength as you move further away from a long, straight current-carrying wire?
The magnetic field strength decreases.
What happens when the angle between a current-carrying wire and a magnetic field is 90 degrees?
The force on the wire is maximized.
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 velocity, your fingers in the direction of the magnetic field, and your palm will point in the direction of the force.
How do you determine the direction of magnetic force on a current-carrying wire using the right-hand rule?
Point your thumb in the direction of the current, your fingers in the direction of the magnetic field, and your palm will point in the direction of the force on the wire.
What are the steps to apply Ampère’s Law?
- Choose an Amperian loop. 2. Calculate the line integral of the magnetic field around the loop. 3. Determine the current enclosed by the loop. 4. Apply the formula: .
Difference between Biot-Savart Law and Ampère’s Law?
Biot-Savart: Calculates magnetic field from a small current segment, useful for complex geometries. | Ampère’s Law: Relates magnetic field around a closed loop to the enclosed current, useful for symmetrical situations.
Compare the force on a moving charge vs. a current-carrying wire in a magnetic field.
Moving Charge: Force is on a single charge, F = q(v x B). | Current-Carrying Wire: Force is on the entire wire, F = ILBsinθ.