2. What is Power?
• The amount of work applied to an object per unit if time.
• The rate of doing work
Power = Work
Time
(J)
(s)
(Watt)
3. What is Power?
• When thinking of power, several ideas come to
mind, many of which extend beyond the scientific
concept in physics. One way to think about power
is to think of how much energy is expelled over
time.
4. What is power in Physics?
• Power in science is
defined as the amount of
work completed or
energy released per unit
time
5. Units of Power.
• Power is measured in Watts (W),
which is the equivalent of the
amount of Joules of energy are
released per second (J/s). This unit
of measure was named in honor of
an engineer named James Watt.
Watt performed several
experiments where he measured
the distance an object was moved
over a specific time period.
6. • StandardunitforPOWERisWattsorJoulepersecond
• This term is derived from JAMES WHATT
the famous Scottish engineer who
invented the first modern condensing
steam engine.
• 1 watt is equal to the 1 joule work done in 1 second
• 1 horse power = 746 watts
7. Thank you so much for your interest and attention.
And have a great day!
- Group 5
