82508-Efield1

# 82508-Efield1 - Objectives for the Day Explain the concept...

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Objectives for the Day: 08/25/08 1) Explain the concept of Electric Field . 2) Calculate the electric field of discrete charge distributions. 3) Introduce continuous charge distributions.

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Example 1 from PS 2 A charge of q 1 is located at x= 0 and a charge q 2 is located at x= x 2 on the x axis Find the place on the x axis where there is no net force on a third charge q 3 .
) ( 2 ) ( 4 4 2 2 1 2 2 1 2 1 2 1 2 2 1 2 q q x q q q q x q x x - - - ± = Example 1 A charge of q 1 is located at x= 0 and a charge q 2 is located at x= x 2 on the x axis Find the place on the x axis where there is no net force on a third charge q 3 .

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) ( 2 ) ( 4 4 2 2 1 2 2 1 2 1 2 1 2 2 1 2 q q x q q q q x q x x - - - ± = A charge of q 1 is located at x= 0 and a charge q 2 is located at x= x 2 on the x axis Find a formula for the position on the x axis where the force on a charge q 3 is zero. Example 1 Groups! What is missing in this formula?
The Electric Field The electric field is quantitatively defined as the force per unit charge at a point:

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82508-Efield1 - Objectives for the Day Explain the concept...

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