PHYSICAL QUANTITY
Power: formulas and units of measurement
Power: symbol P, N, unit W. Formulas and explanations for Mechanics, Electricity.
P,\ NP, N\text{Вт}watt
KEY CONNECTIONS
Formulas
P=\frac{A}{t}P = A / t
P=FvP = Fv
P=UIP = UI
P=I^2RP = I²R
P=\frac{U^2}{R}P = U² / R
NOTATION
Quantities in formulas
- P
- Power is the speed of doing work or transferring energy.
- A
- Work is a measure of energy transferred when a force is applied.
- t
- Time is a quantity characterizing the duration and sequence of events.
- F
- Force is a measure of the interaction of bodies that changes their movement or shape.
- v
- Velocity is the rate and direction of change of a body's position.
- U
- Electric voltage is the work done by the electric field when transferring a unit charge.
- I
- Current strength is the charge passing through the cross section of a conductor per unit time.
- R
- Electrical resistance is a measure of a conductor's resistance to electric current.
THEORY
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PRACTICE
Related tasks
DIRECTORY