Electric Field due to a charge q

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Electric Field due to a charge q
Electric field is the electric force acting on a
unit positive charge
Fe E qo
Units of E N/C
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Example 23.8
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Example 23.9
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Electric Field Lines

• Same direction as the electric field vector at
  any point.
• E is tangent to the electric field line
• Number of lines perpendicular to the lines is
  proportional to the field
• E small lines further apart
• E large Lines closer
• No two lines can cross

Lines begin on a positive charges and end of
negative charges 1/r2 behavior from geometry.
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Motion of Charged Particles in a Uniform Electric
Field
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