Practice: If the force between two charges is F when the distance is d, what will the force between the two charges be if they were moved to a distance of 2d?
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Concept #1: Coulomb's Law
Example #1: Charges In A Line (Find Zero Force)
Practice: In which direction will the −1 C charge move? If it has a mass of 10 g, what will its initial acceleration be?
Example #2: Charges In A Triangle (Rank Force Pairs)
Example #3: Charges in a Plane
Example #4: Exploiting Symmetry
Practice: What is the direction of the net force on the charge at the center of the square in the following figure?
Example #5: Electroscope (Find Charge)
Progress
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Videos in Coulomb's Law (Electric Force)
Concept #1: Coulomb's Law
Practice #1: Changing Distance (Proportional Reasoning)
Example #1: Charges In A Line (Find Zero Force)
Practice #2: Three Charges In Line
Example #2: Charges In A Triangle (Rank Force Pairs)
Example #3: Charges in a Plane
Example #4: Exploiting Symmetry
Practice #3: Direction of Net Force On Square
Example #5: Electroscope (Find Charge)
