An-Najah National University

Professor Sami M. AL-Jaber - Physics Department

Editorial Board member of Journal of Modern Physics (JMP). Recipient of PFDP Teaching Excellence Award 2010.

 
  • Bookmark and Share Email
     
  • Thursday, December 10, 2009
  • Energy and Momentum Considerations in an Infinite Solenoid
  • Published at:JEMAA
  • Sami M. AL-Jaber*

    Department of Physics, An-Najah National University, Nablus, West-Bank, Palestine. E.Mail:[email protected]

    * On sabbatical leave: Palestine Technical University(PTU), Kadoorie, Tulkarm, palestine.

     

     

     

     

     

    Abstract: The electromagnetic linear momentum and the energy balance in an infinite solenoid with a time-dependant current are examined. We show that the electromagnetic linear momentum density and its associated force density are balanced by the hidden momentum density and its associated hidden force density respectively. We also show that exactly half the energy delivered by the power supply appears as stored magnetic energy inside the solenoid. The other half is lost against the induced electromotive force that appears in the windings of the solenoid during the time through which the current is building up towards its final value. This energy loss, which is found in other analogue situations, is necessary to transfer the system from an initial non-equilibrium state to a final equilibrium one.  

     
  • Bookmark and Share Email
     
Leave a Comment

Attachments

PROFILE

Sami Mohammad Jaber
Theoretical Physics
Professor, Theoretical Physics, Physics Department, AN-Najah National UniversityNablus, Palestine. http://www.blogs.najah.edu/staff/AL-Jaber
 
Show Full ProfileEnglish CV
 
 

PUBLISHED ARTICLES

GENERAL POSTS

ON GOING RESEARCHES

 
Please do not email me if you do not know me
Please do not e-mail me if you do not know me