Please enable JavaScript.
Coggle requires JavaScript to display documents.
3.2 Static Electricity and Conduction (Terminologies (Electrolyte (Liquid…
3.2 Static Electricity and Conduction
Electrostatics (electricity at rest)
Static charge easier to make with insulators
Charged Bodies
Opposite Charges Attract
Same Charges Repel
Electrical Charge Unit = 1 coulomb
Terminologies
Electrolyte
Liquid carrying electric current
Electrolysis
process of electric current passes thru ionic solution
Plasma
Gas stripped of its electrons
Made through high temp
Due to low mass gas, electrons faster
Vacuum
Ideal conductor since no blockage
3.3: Electrical Terminologies
Electrical Energy
Kinetic Energy
energy inside object due to motion
Potential Energy
energy inside object due to position
Electrical Charges
1 coulomb = unit for charge
1 voltage = electromotive force = difference of potential between 2 bodies
two bodies require to have different charges to have a voltage
Electric Current
Electron Flow = Negative to Positive Polarity
Conventional Current Flow (EU & UK) = Positive to Negative
Random Drift = random movement/drifting of free electrons in conductors
Directed Drift = intentional movement of electrons due to potential difference ( negative to positive terminal)
Speed of light = 186,000 miles per second
Unit for Current = Amperes = 1 coulomb of charge per second
Current (I) = Q/t
Electrical Resistance
Conductance
Electrical Laws
Faraday's Law
induced voltage proportional rate of change of magnetic flux
Ohm's Law
Current proportional Voltage
Current inversely proportional to the resistance
Kirchhoff's Law
Current Law
sum of currents towards = sum of currents flowing away (WHEN CHARGE DENSITY IS CONSTANT)
Voltage Law
sum of voltages in closed circuit = ZERO
Len's Law
Induced current prevents change in magnetic flux when applied to the direction of magnetic field.