AP Free Response Question
2008 C2 E&M
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In the circuit shown above, A and B are terminals to which different circuit components can be connected.
(a) Calculate the potential difference across R
_{2}
immediately after the switch
S
is closed in each of the following cases.
i. A 50 Ω resistor connects A and B.
ii. A 40 mH inductor connects A and B.
iii. An initially uncharged 0.80 μF capacitor connects A and B.
(b) The switch gets closed at time t = 0 . On the axes below, sketch the graphs of the current in the 100-ohm resistor R
_{3}
versus time t for the three cases. Label the graphs
R
for the resistor,
L
for the inductor, and
C
for the capacitor.
Topic Formulas
Description
Published Formula
Ampere's Law
Biot-Savat Law
capacitance
capacitance (dielectric)
capacitors in parallel
capacitors in series
Coulomb's Law
current density
electric current
electric current
electric field
electric field strength
electric potential energy
energy stored in a capacitor
energy stored in an inductor
Faraday's Law
force ona current-carrying wire
Gauss' Law
induced emf (inductor)
induced emf (magnetism)
Joule's Law
magnetic field around a current-carrying wire
magnetic field of a solenoid
magnetic flux
magnetic force on a moving charge
motional emf
Ohm's Law
parallel-plate capacitor
potential and electric field strength
potential due to a collection of point charges
resistance in parallel
resistance in series
resistivity
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Motional EMF
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Parallel Plate Capacitors
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RC Time Constants
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RL Circuits
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Shells and Conductors
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Spherical, Parallel Plate, and Cylindrical Capacitors
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Torque on a Current-Carrying Loop
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Drill: Induction
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Electrostatics Point Charges Review
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DC Currents
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Electric Potential
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Electric Power
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Parallel Circuits
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Power Production
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Power Transmission
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Brightness
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Electrostatic Attraction
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Induction Coils
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Light and Heat
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Lightning
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Photoelectric Effect
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Potential
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Series Circuits
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Shock!
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Van de Graaff
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Combinations of Capacitors
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Coulomb Force Extra Practice
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Coulomb's Law: Some Practice with Proportions
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Electrostatic Forces and Fields: Point Charges
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Kirchhoff's Laws: Sample Circuit
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Parallel Reading - The Atom
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Practice with Induced Currents (Constant Area)
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Basic Capacitors
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Basic DC Circuits
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Electric Field Strength vs Electric Potential
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Multiple-Battery Circuits
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Textbook Set #6: Circuits with Multiple Batteries
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