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A potential difference of 1.20 V will be applied to a 33.0 m length of 18-gauge copper wire (diameter =

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A potential difference of 1.20 V will be applied to a 33.0 m length of 18-gauge copper wire (diameter = 0.0400 in.). Calculate

(a) The current,

(b) The magnitude of the current density,

(c) The magnitude of the electric field within the wire, and

(d) The rate at which thermal energy will appear in the wire.

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a The current is V V V 1 20 V 0 0400 i R pLA 4pL …View the full answer


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I hold M.Sc and M.Phil degrees in mathematics from CCS University, India and also have a MS degree in information management from Asian institute of technology, Bangkok, Thailand. I have worked at a international school in Bangkok as a IT teacher. Presently, I am working from home as a online Math/Statistics tutor. I have more than 10 years of online tutoring experience. My students have always excelled in their studies.
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Fundamentals of Physics

Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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Question Posted: January 19, 2011 05:07:29
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