Coulomb’s Law
Physics ⇒ Electricity and Magnetism
Coulomb’s Law starts at 9 and continues till grade 12.
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See sample questions for grade 12
Describe the effect of the sign of charges on the direction of the force according to Coulomb’s Law.
Describe the superposition principle as it applies to electrostatic forces.
Explain the significance of the inverse square nature of Coulomb’s Law.
If the magnitude of each of two point charges is doubled and the distance between them is halved, by what factor does the force change?
If three charges are placed at the vertices of an equilateral triangle, explain how to find the net force on one of the charges.
State Coulomb’s Law and write its mathematical expression.
A point charge q is placed at the center of a cube. What is the net electrostatic force experienced by the charge due to the induced charges on the surface of the cube?
