Formula for Watts? - RC Groups
Oct 21, 2004, 11:04 AM
Alphabandaid

# Formula for Watts?

Watt is the formula for measuring wattage?
I'm attempting to teach myself the relationships of the variables involved.
 Oct 21, 2004, 11:07 AM me move stick helicopter go up Here's a great tool: http://www.angelfire.com/pa/baconbacon/page2.html
 Oct 21, 2004, 11:31 AM Registered User Watts = Volts * Amps
 Oct 21, 2004, 03:47 PM DVA mecanical watts are Power= 2*pi*rpm*T/60 [W] T in N-m or Power= 2*pi*rpm*T*746/(60*550) T in ft-lb there is about 746 W in one hp and 550 ft-lb/s in one hp DVA
Oct 21, 2004, 03:52 PM
Registered User
Quote:
 Originally Posted by aplphabandaid Watt is the formula for measuring wattage? I'm attempting to teach myself the relationships of the variables involved.
V=IR,P=VI.My lecturer at college once said that the use and understanding of these two apparently simple statements comprises 50% of electrical engineering,everything else comprises the other 50%.A bit of an egsageration perhaps .But you get his point once you start to dabble
I repeat. V=IR P(watts)=VI
 Oct 22, 2004, 09:59 AM Alphabandaid Okay, thanks. Now to see if my old brain can digest this. thanks much all.
 Oct 22, 2004, 01:12 PM Registered User http://www.grc.nasa.gov/WWW/K-12/Sam...w/ohmslaw.html This might be of interest :-)
Oct 22, 2004, 03:24 PM
Gotta have more cowbell!!
Quote:
 Watts = Volts * Amps
If, in the odd occurance you don't know the voltage but do know the current and resistance you can still find "P" (watts). P = (I*I)*R It might be hard to apply to motors, but it works on circuits.

Mike