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Electronics/physics (drift speed and electric field)

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Question
A) What electric field is necessary to drive a 6.5 A current through a silver wire 0.95 mm in diameter?

B)Each atom in aluminum contributes about 3.5 conduction electrons. What is the drift speed in a 2.3 mm -diameter aluminum wire carrying 25 A?

Thank you!

Answer
This sounds like a homework problem - which is welcome, but we like to give you clues and theory but leave the actual work to you.  

The solution requires you to find the density of the silver and aluminum before making the calculaation for the drift speed.

Then, using the algorithm found in this 'ask' question below you can make the calculations.

http://answers.yahoo.com/question/index?qid=20080226130017AAIcBnL

There are other solutions hints you can find with a couple of googles.  Hope this helps.

Best wishes.  

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Electronics questions about AC, DC and digital theory.

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Graduate electrical engineer with over 40 years in electronic design, manufacturing, project organization and patent review. Experience in fields of industrial and consumer electronics (audio, video, acoustics, etc.)

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IEEE (Institute of Electrical and Electronics Engineers); Senior Life member AES (Audio Engineering Society), Fellow Life member

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BSEE University of North Dakota

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