ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
fuse rejectors
by NORCAL. 03/29/17 01:44 AM
Old decora style outlets
by NORCAL. 03/29/17 01:41 AM
NFPA stuff
by gfretwell. 03/28/17 08:08 PM
Anyone hiring inspectors?
by HotLine1. 03/27/17 08:03 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,833 Are you busy
166,727 Re: Forum
160,851 Need opinion
Who's Online Now
0 registered members (), 61 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#130643 - 09/18/06 01:46 AM how the polarity of inductor changes?  
satishkumar  Offline
Junior Member
Joined: Sep 2006
Posts: 5
hyd,ap,india
when we apply the D.C source to inductor,current will rise in inductor. but when we switch off the supply how inductor will change its polarity?


satish

Tools for Electricians:

#130644 - 09/21/06 08:24 PM Re: how the polarity of inductor changes?  
John Crighton  Offline
Member
Joined: May 2005
Posts: 177
Southern California
The current in the inductor doesn't change polarity, but the voltage across it does. The voltage is proportional to the change in the magnetic flux, so a decreasing flux has the opposite sign (polarity) from an increasing flux.

For further reading, see:
http://electrical-contractor.net/ubb/Forum7/HTML/000419.html



Member Spotlight
RH1
RH1
California
Posts: 22
Joined: August 2009
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.002s) Memory: 0.7407 MB (Peak: 0.8579 MB) Zlib enabled. Server Time: 2017-03-30 08:47:41 UTC