# Shared Flashcard Set

## Details

Physics II final
Physics II final
41
Physics
08/12/2014

Term
 Metal Shell
Definition
 Charge is zero on surface if charge is inside shell
Term
 Charge distance
Definition
 increases or decreases by factor of 4
Term
 What is charge transferred by?
Definition
 Electrons- smaller and easy to move
Term
 Bits of paper and comb attracted to comb by?
Definition
 Charging by Conduction
Term
 Electric Potential
Definition
 Electromotive ForceVoltageElectric forcemoves chargesAll the same thing
Term
 Potential Energy from E field
Definition
 ability of the field to do work
Term
 A capacitor stores ________
Definition
 charges
Term
 Capacitors in paraelle circuit
Definition
 C1+C2
Term
 Capacitors in series circuit
Definition
 1/C1+1/C2
Term
 Resitors and everything else in PARALLEL CIRCUIT
Definition
 Know VOLTAGE, 1/Req+R1
Term
 Resistors and everything else in SERIES CIRCUIT
Definition
 Know CURRENT, Req+R1
Term
 Why do capacitors in parallel add together?
Definition
 area of each capacitor plate is available to fill
Term
 Dielectric is a material used for ______
Definition
 Increase capacitance
Term
 Equipotential line
Definition
 lines that represent a contour of identical potential
Term
 Electric field lines passing through a surface are called _______
Definition
 Electric Flux
Term
 Parallel capacitors with unequal values will have the same ________
Definition
 Electric Potential
Term
 To move charges requires a PUSH, called _______
Definition
 Electric PotentialVoltageEMF
Term
 What speed does an electric field move?
Definition
 Speed of Light
Term
 Correct Unit for Voltage*Current is ______
Definition
 Watt (W)
Term
 Semiconductor
Definition
 Material that can be controlled to be an insulator or conductor
Term
 Resistance is dependent on ______
Definition
 LengthAreamaterialTemperature
Term
 Parallel circuit with two unequal resistors will see the same _____
Definition
 Voltage
Term
 Series circuit with two unequal resistors will see the same _____
Definition
 Current
Term
 Kirchoff's 1st rule (junction rule)
Definition
 Iin=Iout
Term
 Kirchoff's 2nd rule (Loop rule)
Definition
 Sum of voltage around the loop = 0
Term
 Time Constant
Definition
 Resistance * Capacitance
Term
 A magnetic field is caused by
Definition
 a charge moving in any type of way
Term
 Dipoles
Definition
 Magnets always come in ______
Term
 A material that is paramagnetic
Definition
 oxygen
Term
 An induced magnetic field is produced in a loop of wire by _____
Definition
 a changing magnetic field
Term
 Steady DC current does not cause an induced magnetic field near a loop of wire because ______
Definition
 constant magnetic flux
Term
 AC current causes an induced magnetic field because _______
Definition
 changing magnetic flux
Term
 Inductor
Definition
 stores energy in a magnetic field
Term
 Capacitor
Definition
 stores energy in a electric field
Term
 Ferromagnetic
Definition
 magnetic only in the presence of an outside magnetic field
Term
 Capacitors reactance beccomes smaller as the frequency becomes _____
Definition
 Large
Term
 Inductors reactance becomes smaller as the frequency becomes _________
Definition
 Small
Term
 Impedance
Definition
 resistance that is a mix of stored and dissipated power
Term
 Reactance
Definition
 resistance that does not dissipates and stores power
Term
 RMS
Definition
 used to calculate average power
Term
 Resonace frequency
Definition
 reactance doubles in a circuit
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