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PHYS 163 Exams |
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The handout at right provides guidance on grading yourself after you finish your test. |
Short summary: 1) put final answers in the boxes (if one is provided). 2) know when to include & not include units. 3) simplify answers to a reasonable extent. 4) round final answers to 3 sig figs unless otherwise noted. 5) exception: use 4 sig figs if first digit is a 1. 6) compress numerical factors into decimal form (example: 2πkx/3r = 2.09kx/r ) |
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Partial List of Topics Covered Anything in the book or lectures/labs is also fair game |
Test |
Solution |
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Point Charges · Electric forces, fields, potential, potential energy · Often arranged in a line (e.g. dipole), triangle, rectangle, circle, or even 3D · Use symmetry to simplify · Occasionally rotating coordinates helps · Could also have FBDs, moving through plates, or using K_i+U_i = K_f +U_f stuff
Continuous distributions of charge · Electric field or electric potential · Mainly rods, arcs, rings, disks, and washers · Uniform or non-uniform density possible
Gauss’s Law · Slabs, spheres (or spherical shells), & cylinders (or cylindrical shells · Could have conductors, insulators, or both · Insulators could be uniform or non uniform · Use integration to relate total charge to constants in a given non-uniform density formula · Sketch plots and determine units of constants
Relate potential to field and vice versa · Use partial derivative to go from V to E · Use line integral to go from E to V · Interpret V vs x plots, use for computations |
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Capacitance (Ch 25) · Deriving capacitance for shells, plates, etc · Capacitor Networks (should be able to solve with series and parallel rules) · Connecting two previously charged caps, how will charges rearrange (or bring dielectric in/out)
Resistance & Resistivity (Ch 26) · Current and current density (relate to the geometry of a resistor) · Determine resistance for a particular shape (may have non-uniform cross-sectional area or resistivity) · Resistance and/or resistivity versus temperature · Relate resistance or resistivity to IV plots · Relate resistivity to plots of R vs L
Resistor Circuits & RC transient Circuits (Ch 27) · Resistor networks with series/parallel rules · How does a resistor network change when a switch is opened/closed (or bulb burns out) · Resistor networks with KVL & KCL · Simple RC transients: determine initial and/or steady state conditions · Simple RC transients: plot I/Q/V/P/U as functions of time · Simple RC transients: interpret plots of I/Q/V/P/U to determine tau, V_max, etc · Complex RC transients: determine initial and/or steady state conditions
Magnetic Force & Torque (Ch 28) · Mag force on moving charge · Mag force on wire · Mag torque on loop of wire · Use right hand rules · Determine or use magnetic moment |
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Biot-Savart Law · Wires with straight and/or circular sections · Net field from several long straight wires · Use right hand rules for directions
Ampere’s law · Wires, cylindrical shells, cylinders, slab · Uniform or non-uniform · If non-uniform, relate current density constants to total current and find units · Sketch plots of magnitude of B vs r · Use right hand rules for directions
Mag flux and Induced EMF · Rod translating or swinging in external B-field · Rod on rails stuff · External B-field as function of time near loop · Loop spinning in presence of external field · Loop changing size in external field · Etc
DC Circuits that might show up · RL transients · LC oscillators · Damped Oscillator (RLC with no source or battery) Note: any damped oscillator question would probably be conceptual. The math is time-consuming and typically gets covered in-depth in a full circuits course.
AC circuits that might show up · RLC Series Circuit with a function generator (damped, driven oscillator) · Filter circuits (plot Z or I vs omega) · Filter circuits (interpret plots of Z or I vs omega)
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