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6 Sep 2009 20:35:19 IST

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How is the direction of electric field same as the direction of induced current in a closed loop

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1. How is the direction of electric field same as the direction of induced current in a closed loop placed in a varying magnetic field ?

2. Could someone plz explain eddy current.Are eddy currents produced only due to motion of a conductor in magnetic field.Plz explain about the eddy currents in a bit detail.

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mohit saxena

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Joined: 27 Aug 2009

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6 Sep 2009 22:33:37 IST

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Ans1.Force on electron is opposite to electric field,they start to drift opposite to electric field,conventionally electric current is opposite to flow of electron,hence current is in the direction of field or other explanation is J=(sigma)(E),current density is parallel to electric field,and current is in the direction current density

mohit saxena

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Joined: 27 Aug 2009

Posts: 27

6 Sep 2009 22:39:38 IST

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Ans 2. Eddy currents are produced by nonconservative electric field,this electric field due to varying flux it may be due to varying magnetic field or varying magnetic flux,if conducting disc is placed in varying magnetic field , electric field generates and due to E electon starts to drift and current generates.

Soumen Goswami

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Joined: 10 Apr 2007

Posts: 1777

3 Oct 2009 16:53:59 IST

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Good answers Mohit ... very clear & crisp

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