Shared Flashcard Set

Details

Ch 26-30
Capacitors, Current and Resistance, Current Density, Resistivity, Circuits, Magnetic Fields
15
Physics
Undergraduate 1
04/06/2011

Additional Physics Flashcards

 


 

Cards

Term
Capaitance
Definition

The amount of charge needed for there to be 1 V potential difference betweent he plates.

 

an object has an amount of capacitance (in Farads) independent of type of circuit.

 

Depends only on physical properties (geometry, size)

 

= Charge/ Voltage

Term

Capacitors

(in parellel)

Definition

ADD!

 

 

C1+C2+C3 = Ceq

 

- Have equal voltage!

Term
Charge Density
Definition
sigma = Q/A
Term

Capacitors

(in series)

Definition

Ceq =

 

_1_

1+ 1

c1 c2

 

- Have equal Charge!

Term
Electron Velocity
Definition
10^6 m/s
Term
Drift Velocity
Definition
10^-4 m/s
Term
Current Velocity
Definition
3*10^8 m/s
Term
Resistance
Definition

The amount of voltage it takes to drive 1 AMP of current across a Potential Difference of 1V

(Ohms)

 

the higher the potential difference across the resistor, the large the current through it.

Term
Ohm's Law
Definition

V= IR

 

Power = VI, I^2R, v^2/R

 

Energy = P*time

 

Term
Volt
Definition
1 J/C
Term
Amp
Definition
1C/sec
Term
Current Density (J)
Definition
J = I/A (Coulombs* s-1/ m^2)
Term

Resistance

(using Resistivity)

Definition
R = row * (L/A)
Term

Resistors

(in series)

Definition

Add

- Have equal current

Term
Magnetic force
Definition
F = q (v x B)
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