Electrostatics: Coulomb's Law

What is Coulomb's Law?

• Coulomb's Law is related to gravitational forces.

• Coulomb's Law states that opposite charges repel each other.

• Coulomb's Law describes the electrostatic force between charged objects.

• Coulomb's Law only applies to magnetic fields.

State the mathematical expression for Coulomb's Law.

• F = k * |q1 * q2| / r^2

• F = k * q1 * q2 / r^2

• F = k * q1 / r^2

• F = k * q2 / r^2

What are the SI units of charge and force in Coulomb's Law?

• Ohm (Ω) and Tesla (T)

• Joule (J) and Volt (V)

• Ampere (A) and Watt (W)

• Coulomb (C) and Newton (N)

Explain the concept of the inverse square law in Coulomb's Law.

• The inverse square law in Coulomb's Law states that the force between two charged objects is directly proportional to the square of the distance between them.

• The inverse square law in Coulomb's Law states that the force between two charged objects is inversely proportional to the square of the distance between them.

• The inverse square law in Coulomb's Law states that the force between two charged objects is inversely proportional to the cube of the distance between them.

• The inverse square law in Coulomb's Law states that the force between two charged objects is inversely proportional to the distance between them.

How does the distance between two charges affect the force between them according to Coulomb's Law?

• As the distance between two charges increases, the force between them increases.

• As the distance between two charges increases, the force between them becomes repulsive.

• As the distance between two charges increases, the force between them decreases.

• As the distance between two charges increases, the force between them remains constant.

Define the constant k in Coulomb's Law.

• 6.6743 x 10^-11 N m^2/kg^2

• 9.81 m/s^2

• 3.14159 x 10^7 N m^2/C^2

• 8.9875 x 10^9 N m^2/C^2

What is the principle of superposition in Coulomb's Law?

• The force between charges is inversely proportional to the square of the distance between them

• Charges exert forces on each other only when they are in direct contact

• Total force exerted on a charge by a group of other charges is the vector sum of the individual forces.

• The force between charges is directly proportional to the product of the charges

Describe the vector nature of the force in Coulomb's Law.

• The force in Coulomb's Law is a tensor quantity.

• The force in Coulomb's Law is a complex number.

• The force in Coulomb's Law is a vector quantity.

• The force in Coulomb's Law is a scalar quantity.

How is Coulomb's Law related to the electric field?

• The electric field is unrelated to Coulomb's Law.

• Coulomb's Law only applies to magnetic fields.

• The electric field is inversely proportional to charge according to Coulomb's Law.

• The electric field is related to Coulomb's Law through the equation F = qE.

Discuss the similarities and differences between Coulomb's Law and Newton's Law of Universal Gravitation.

• The similarities between Coulomb's Law and Newton's Law of Universal Gravitation lie in the inverse square relationship between force and distance, but the key difference is in the nature of the forces they describe - electric charges for Coulomb's Law and masses for Newton's Law of Universal Gravitation.

• The formulas for both laws are identical

• Coulomb's Law applies to macroscopic objects while Newton's Law of Universal Gravitation applies to microscopic particles

• Both laws describe the same type of force