Electric field

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Examples
Lessons
  1. How to draw electric field line diagrams
    Draw the electric field line diagrams for the following:
    1. Positive point charge
      PHYS 8 2 1a
    2. Negative point charge
      PHYS 8 2 1b
    3. Parallel plates with equal magnitude charges
      PHYS 8 2 1c
    4. Two point charges with opposite equal magnitude charges
      PHYS 8 2 1d
    5. Two point charges with positive equal magnitude point charges
      PHYS 8 2 1e
    6. Two point charges with negative equal magnitude point charges
      PHYS 8 2 1f
  2. Calculations with electric field
    A pair of positive and negative point charges are fixed in the following positions:
    PHYS 8 2 2
    1. Find the electric field (magnitude and direction) at point A.
    2. A charge placed at A experiences a force of 5.9×103N5.9 \times 10^{-3} N [right]. Find the magnitude and polarity of the charge.