ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Inspections and Testing
by gfretwell. 04/20/18 08:44 PM
FEMA height and electrical equiment.,
by HotLine1. 04/20/18 08:49 AM
This anti-theist is priceless!!!
by LongRunner. 04/19/18 04:02 PM
Recall notice: Square D Services Switches
by gfretwell. 04/18/18 01:24 PM
Big Square D service switch Recall
by sparkyinak. 04/18/18 12:30 AM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 7 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
how the polarity of inductor changes? #130643
09/18/06 01:46 AM
09/18/06 01:46 AM
S
satishkumar  Offline OP
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:
Re: how the polarity of inductor changes? #130644
09/21/06 08:24 PM
09/21/06 08:24 PM
J
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:
https://www.electrical-contractor.net/ubb/Forum7/HTML/000419.html


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
waymag
waymag
dallas, texas, USA
Posts: 68
Joined: January 2002
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
245,862 Are you busy
182,906 Re: Forum
172,737 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.019s Queries: 14 (0.004s) Memory: 0.9417 MB (Peak: 1.0601 MB) Zlib enabled. Server Time: 2018-04-21 07:43:14 UTC