Vaiables and Fact (that I need to know)
R
Resistance
V
Voltage
Measured in Volts
E
Energy/Elementary Charge
Q
Charge
T
Time
W
Watts
I
Current
To Find Volts: 1V=1J/1C
V=IR
E=VIT
Elementary Charge
Energy
= 1.6x10^-19
Q=ne
Seconds/1
Seconds can be written as : s
s/1
E=VIT
E=VIT
R=V/I
Electromotive Force
Also known as EMF
E=W/Q
V=W/Q
V and E can switch
1V=1J/1C
Columb = 6.4x10^19
Measured in Volts
Potential difference
Can be shortned to P.D.
V=W/Q
1V=1J/1C
Measured in volts
Measured with a Voltmeter
Work
Reduces the current flowing through a conductor
Influenced by
Heat (More heat, the more resistance)
Type of Material
Cross section area (the more, the less resistance)
Length (the more length, the more resistance)
Power
Is energy used in a length of time
Work (W) done is a certain time
P=E/T
P=W/T
P=Work/Time
P=VIT
T=VI
P=VI
New Equations
P=E/T
P=VI
P=(I^2)R
P=(V^2)/R
Kirchhoff's Law
Series
Paralles
V(0)=V(1)+V(2)+V(3)
I(0)=I(1)=I(2)=I(3)
R(s)=R(1)+R(2)+R(3)
V(0)=V(1)=V(2)=V(3)
I(0)=I(1)+I(2)+I(3)
R(p)=1/R(1)+1/R(2)+1/R(3)