Final Exam Review
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Electric Fields
Slides #6-7 to introduce the whole chapter
Electric field strength
o Slide #21 – Coulomb’s Law
o Use superposition to calculate the field strength and potential in an electric
field of a point charge or charged object. (slide #25)
o Slides #32-33
o Calculating electric field for different shapes (
Gauss’ Law (slides #66-69)
o Drawing field lines
o Use Gauss’s Law to calculate field strength and electric potential (?) for a
symmetrically distributed charge. (example #71-73)
Work done by an electric field (slide #87)
o Scalar product A(dot)B (write w arrow on top) = [A]*[B]cos(theta)
Electric Potential & Work
o Slides #95-98
o Calculating potential due to a collection of charges (slide #100)
Magnet Fields
Basic idea of magnetic fields
o Moving charge … source & affected by MFs (#24 - #25)
o Force from magnetic field (#32)
o MF lines (#37-#40)
Boit-Savart’s Law
o General law is #48
o Show slide #50 – direction using R-hand rule
o Different shapes (slide #58)
Gauss’s Law
o Magnetic flux through any closed surface is always zero.
o Magnet field lines are different then electrical field lines (slide #74)
Amphere’s Law
o Slides #83-#85
Integration direction & Positive direction of current for Ampere’s
Law
Fingers along direction of positive integration Thumb in direction of positive current
Magnetic Force on moving change (slides #104-#107)
o Note the radius = …
Magnetic force on a current carrying conductor
Review the Right-hand rule uses:
o Current & mag field directions
Thumb – current along a wire
Fingers – direction of mag current around the wire.
o Force on a moving charge
Right-hand fingers in direction of v and curl towards B
passing through an angle less than 180 degrees.
Thumb is the direction of the Lorentz force on a positive charge.
o Integration direction & Positive direction of current for Ampere’s Law
Fingers along direction of positive integration
Thumb in direction of positive current
Mechanical Oscillation & Waves
Talk about wave source / oscillation
o Talk about simple harmonic motion (slide #13)
Def. Simple harmonic motion is a motion where the acceleration
is proportional to the displacement but opposite in sign具有加速度 a与位移的大小x成正比,而方向相反特征的振动称为简谐运动
Equation (#14)
o Period, frequency, angular frequency, (#17-#18) – related to physical
properties of the system.
o Phase & phase constant (#23, #25)
o Energy of Mechanical Oscillation (#44)
o Superposition of oscialltions (#51-#52)
Waves
o Longitudinal, latitudinal BlIF*mBqFvmo Velocity of the wave – related only to the medium; wavelength, period, …
(#69-#71)
o Wave function y(x,t)
o Emphasize the wave source and wave phase difference.
Light
Properties of light
Coherent light
Index of refraction
Half wave loss
Interference
o Anti-reflective or reflective-coating
o Double-slit interference
Diffraction
o Single-slit calcs
o Aperture calcs
