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Vaiables and Fact (that I need to know) (Power (New Equations (P=E/T, P=VI…
Vaiables and Fact (that I need to know)
R
Resistance
R=V/I
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)
V
Voltage
Measured in Volts
To Find Volts: 1V=1J/1C
V=IR
E=VIT
E
Energy/Elementary Charge
E=VIT
Energy
Elementary Charge
= 1.6x10^-19
Q=ne
Q
Charge
T
Time
Seconds/1
s/1
Seconds can be written as : s
E=VIT
W
Watts
Work
I
Current
Electromotive Force
Also known as EMF
Measured in Volts
E=W/Q
V=W/Q
V and E can switch
1V=1J/1C
Columb = 6.4x10^19
Potential difference
Can be shortned to P.D.
Measured in volts
Measured with a Voltmeter
V=W/Q
1V=1J/1C
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
V(0)=V(1)+V(2)+V(3)
I(0)=I(1)=I(2)=I(3)
R(s)=R(1)+R(2)+R(3)
Paralles
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)