lecture2 - Electric Fields Definition: Electric Field E q...

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Unformatted text preview: Electric Fields Definition: Electric Field E q ο q Force Field Picture: The “source” charge q produces an electric field in space. The field pushes on the “test” charge q . ? Definition: Electric Field = F E q ο = • A vector • Exists before test charge is introduced • Is produced by other charges (not q ) • q is small so as to not disturb the charges producing the field • it is a mathematical construct Units : N/C Force on tiny “test charge” q charge q Example: Calculate the force on an alpha particle (q = +2e) if it is placed in the field. q [ ] ↓ = C N E 1000 Repeat for an electron. E Fields are E Fields are Produced by Produced by positive charges, positive charges, and terminate on negative charges and terminate on negative charges Which way will a + or – charge move in this field? E Fields between two charged plates E Fields between two charged plates + + + + + + + +-------- Which way will a + or – charge move in this field? E Fields are...
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This note was uploaded on 03/16/2011 for the course PHYSIC 1e03 taught by Professor Dr.oak during the Spring '10 term at McMaster University.

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lecture2 - Electric Fields Definition: Electric Field E q...

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