PART66Online
Menu

Community

Upgrade

Licensing Info

Part-66 Worldwide

Register Forgot password?

Welcome Back

Sign in to your PART66Online account

One click — no password needed

or use email
Forgot password?

Don't have an account? Register here

Back to Q&A
3. Electrical fundamentals

The SI unit of work is the

  • Watt.
  • Newton Meter.
  • Joule.

Explanation from PART66Online

The SI unit of work is the joule, defined as one newton acting through one metre. Although a newton-metre is dimensionally equivalent, the joule is the named SI unit for work and energy, whereas the watt is the unit of power (joules per second).

R

roja90 asked · 16 Feb 2012

is Nm and joule same?

Community Comments (3)

P
PART66Online 16 Feb 2012
Same but primary SI unit of work is Joule.

Check: physics.nist.gov/cuu/Units/units.html
S
sasna 6 Aug 2013
pls clarify when to use watt and when to use joule in SI unit/
thanx
P
PART66Online 6 Aug 2013
Watt is not unit of work (it is unit of power), so it can't be used instead of Joule.

Please Sign In to post a comment.

We use essential cookies to keep you signed in, plus anonymous analytics to understand how the site is used. Cookie-based analytics is set only with your consent. See our Privacy & Cookie Policy.