Module 4 Formulas Flashcards
1
Q
Current in terms of charge
A
Current = charge / time
2
Q
Current in terms of resistance
A
Current = p.d / resistance
3
Q
Current in terms of drift velocity
A
Current = Area x number density x elementary charge x mean drift velocity
4
Q
Resistivity
A
Resistivity = (resistance x area) / length
5
Q
Power
A
Power = voltage x current
6
Q
EMF
A
EMF = work done / charge
7
Q
Frequency
A
Frequency = 1 / period
8
Q
Speed of wave
A
Speed of wave = frequency x wavelength
9
Q
Intensity
A
Intensity = power / area
10
Q
Energy carried by one wave packet
A
Energy = planks constant x frequency Energy = (planks constant x speed of light) / lambda
11
Q
De brogolie equation
A
Lambda = planks constant / momentum of particle
