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Electric Fields Aim: How do charged objects exert a force on each other?

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Presentation on theme: "Electric Fields Aim: How do charged objects exert a force on each other?"— Presentation transcript:

1 Electric Fields Aim: How do charged objects exert a force on each other?

2 Electric Field Electric fields surround ALL charged objects The field lines show the potential path of a small TEST CHARGE –A test charge is a small, “imaginary”, positively charged particle

3 Electric Field Lines + - Field lines point: OUTWARD from + INWARD toward -

4 E-Field Between Different Charges - Field lines NEVER CROSS +

5 E-Field Between Like Charges ++

6 E-Field Between Charged Plates + + + + + - - - - - The E-Field strength is constant ANYWHERE in between the charged plates + -

7 Electric Field Electrostatic Force Units: Newtons (N) Charge of Particle Units: Coulombs (C)

8 Example #1 An object with a charge of -2 coulombs positioned in a uniform electric field experiences a force of -300 newtons. What is the strength of the electric field?

9 Example #2 What is the force experienced by a 0.03 coulomb charge when it is placed in an electric field with a strength of 3 x 10 3 newtons per coulomb?

10 SUMMARY How does the E-Field look around… –A Positive Charge? –A Negative Charge? Equation for Electric Field? Units for E-Field?


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