Ask Question
4 April, 13:12

What is power in physics

+3
Answers (1)
  1. 4 April, 13:20
    0
    Edit

    In physics, power is the rate of doing work or of transferring heat, i. e. the amount of energy transferred or converted per unit time. Having no direction, it is a scalarquantity. In the International System of Units, the unit of power is the joule per second (J/s), known as the watt in honour of James Watt, the eighteenth-century developer of the condenser steam engine. Another common and traditional measure is horsepower (comparing to the power of a horse). Being the rate of work, the equation for power can be written:

    Power

    Common symbols

    Derivations from

    other quantities

    P = E/t

    P = F·v

    P = V·I

    P = T·ω

    As a physical concept, power requires both a change in the physical system and a specified time in which the change occurs. This is distinct from the concept of work, which is only measured in terms of a net change in the state of the physical system. The same amount of work is done when carrying a load up a flight of stairs whether the person carrying it walks or runs, but more power is needed for running because the work is done in a shorter amount of time.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “What is power in physics ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers