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force
directed quantity = vector
(draw an arrow with point of force + value + direction)

symbol:

Newton's law:
Hooke's law:    (linear-elastic materials)

gravity:


electrostatics:

energy

- a scalar physical quantity
- the ability to perform work, to take off heat or to emit light

symbol: E
unit: 1 Joule
symbol:


other units that also used:
electron volt: 1 eV = 1,602 * J
kilowatt hour: 1 kWh = 3,6 MJ
calorie :
1 cal = 4,2 J (small or gram calorie)
1 kcal = 1 Cal = 4,2 kJ (large / kilogram or food calorie)

power

the rate at which work is performed or energy is converted
Electric power: the rate at which electrical energy is transferred by a circuit

symbol: P
unit: 1 Watt 
symbol:


formula:

work

mechanical work: the amount of energy transferred by a force
thermodynamics:  the quantity of energy transferred from one system to another

symbol: W
unit: 1 Joule
symbol:

formula:

current
(strength of electric current)

Def.: physival value - means the rate of flow of electric charge through the surface of the conductor (a quantity)
symbol: I
unit: ampère (the rate of one coulomb per second)
symbol: 1 A

voltage
(electrical potential)

Def: physical value (quantity) for galvanic separation
symbol: U
unit: volt
symbol: 1V


(see also: galvanic separation)

resistor (device)
resistance (value)
reluctance (magnetical resistance)
inductance (resistance of an inductor in alternating current = AC)

Def.: physical value, how strong the electric current is restricted
symbol: R
unit:      1 (Ohm)
symbol and basic units:
             
formula:
             

resistivity
(specific electrical resistance or volume resistivity)

Def: measure of how strongly a material opposes the flow of electric current
symbol: ("Rho")

unit:
         
      
or