26 terms

# AP Physics-B Magnetism mrwaynesclass

Basic information and applications of magnetic fields in the AP physics b curriculum.
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Formula associated with the open right hand rule
F=Bilsin(theta) & F=qvBsin(theta)
Formula associated with the closed right hand rule
B=uI / [2(pi)R]
Ampere's Rule
B=uI / [2(pi)R]
Formula that determines the magnetic field at some distance from a current.
F=Bilsin(theta)
The path of any object when the force is perpendicular to the motion.
circular
Equal to the radius of a charged particle moving in a magnetic field
R=momentum/qB
Orientation of two magnetic fields that attract each other.
opposite direction
Orientation f two magnetic fields that REPELL each other.
same direction
Equation describing the force per unit length for the attractive or repulsive force between two current carrying wires.
u(I1)(I2)/2(pi)R
Equation of flux
BAcos(theta)
Equation for the force on charged particle as it moves across a potential difference.
F=qE
The "E" in "F=qE."
Electric Field
The voltage in terms in electric field and distance between two charged plates.
V=Ed
Work done in moving a charge across an electric potential.
W=qV
Energy of a moving charge.
Kinetic Energy
Law the predicts a currents direction when the magnetic flux is changed.
Lenz's Law
Law that predicts the voltage generated by a change in flux.
Emf
ElectroMotiveforce
Units of emf
Volts (it is a voltage)
A wire is moved perpendicularly across in a B-field. What determines the potential difference between the ends of the wire?
V=blv :V is the potential difference in volts
Rule used to determine the direction of current that creates a magnetic field
Closed right hand rule (Ampere's Rule)
Rule to determine the deflection of a moving charge when it crosses a magnetic field.
Open right hand rule and F=qvBsin(theta)
Rule used the calculate a self generated magnetic field from a moving charge.
closed right hand rule (Ampere's rule)
Two rules used to calculate the force of attraction between two current carrying wires.
closed and open right hand rules ( B=uI/[2(pi)R] and F=BiLsin(theta) )
Dots on the paper mean...
field or current is coming out of the page.
"X's" on the paper means....
field or current is going into the page.