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

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Presentation transcript:

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

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

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

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

E-Field Between Like Charges ++

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

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

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?

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?

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