1. The SDN iPhone App is back and free through November! Get it today and please post a review on the App Store!
    Dismiss Notice
  2. Dismiss Notice
Dismiss Notice

Interview Feedback: Visit Interview Feedback to view and submit interview information.

Interviewing Masterclass: Free masterclass on interviewing from SDN and Medical College of Georgia

emf

Discussion in 'MCAT Study Question Q&A' started by destroyMCAT, Aug 7, 2011.

  1. destroyMCAT

    Joined:
    Aug 7, 2011
    Messages:
    21
    Likes Received:
    0
    Status:
    Pre-Medical
    "In order to produce a current in an electric circuit, a potential difference or emf is required. This emf may arise from a chemical process, an external electric field, or magnetic induction." How is there an emf/potential difference in magnetism. I know that there is potential difference in electrostatics when one moves the ion from higher/lower to higher/lower potential.. but I'm having a hard time understand the emf/potential difference in magnetism.
     
    #1 destroyMCAT, Aug 7, 2011
    Last edited: Aug 7, 2011
  2. Note: SDN Members do not see this ad.

  3. circulus vitios

    7+ Year Member

    Joined:
    Jul 18, 2008
    Messages:
    6,257
    Likes Received:
    1,632
    Faraday's Law says an EMF is induced whenever the magnetic flux changes.
     
  4. costales

    2+ Year Member

    Joined:
    Jul 25, 2011
    Messages:
    2,233
    Likes Received:
    3,013
    Status:
    Resident [Any Field]
    The real explanation is fundamental: A changing magnetic field produces an electric field. This induced field is not associated with charges but only with a changing magnetic flux. For purposes of MCAT, just treat it as an experimental finding described by Faraday's law.
     

Share This Page