final

HideShow resource information
  • Created by: Susie
  • Created on: 04-06-13 22:11
Kirchoff's first law
sum of current entering a junction=sum of current exiting a junction
1 of 27
kirchoff's 2nd law
total emf=sum of pd of all componants
2 of 27
potential difference
1V=1J/C energy per unit charge. loss of electrical energy
3 of 27
electromotive force
gain of electrical energy
4 of 27
ohms law
constant temperature, I and V are proportional in a conductor
5 of 27
i/v resistor
straight
6 of 27
i/v filament lamp
s
7 of 27
i/v LED
at 0 until 6V
8 of 27
LED advantages
-last longer -one goes out others stay on -efficient energy conversions
9 of 27
resistivity
the resisting power of 1m 1m2 length. Relies on intensity and temperature
10 of 27
fuse
a sudden surge from when the earth wire touches the case blows the fuse to stop the circuit getting any hotter
11 of 27
increase temp
releases more charge carriers
12 of 27
UV-A
ageing
13 of 27
UV-B
cancerous, tan
14 of 27
UV-C
ozone
15 of 27
Polarized
only oscillates in one direction
16 of 27
Malus' Law
polarisation angles I=io cos2 pheta a= ao cos pheta
17 of 27
Principle of superposition
the resultant displacement of the wave is the sum of the vector componants
18 of 27
F=wD/d
fringe spacing= wavelength * distance from slits to screen/distance between slits
19 of 27
Photon
quantum of energy of electromagnetic radiation
20 of 27
Electron volt
kinetic energy gained when electron is accelerated by 1v
21 of 27
Finding Planks constant
know w find V plot V and 1/w m= hc/e c and e are constants
22 of 27
Work function
min energy to release electron
23 of 27
threshold frequency
min frequency needed to give wf
24 of 27
Max. KE
hf=wf+ max ke
25 of 27
Intensity is proportional tooooo
A^2 and energy and current
26 of 27
spread increase?
faster and increased wavelenght
27 of 27

Other cards in this set

Card 2

Front

kirchoff's 2nd law

Back

total emf=sum of pd of all componants

Card 3

Front

potential difference

Back

Preview of the front of card 3

Card 4

Front

electromotive force

Back

Preview of the front of card 4

Card 5

Front

ohms law

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all resources »