Coulomb's Law

What is Coulomb's Law?

• Coulomb's Law is the relationship between the force between two charged objects and the distance between them.

• Coulomb's Law is the relationship between the force between two electrically neutral objects and the distance between them.

• Coulomb's Law is the relationship between the force between two gravitational objects and the distance between them.

• Coulomb's Law is the relationship between the force between two magnetic objects and the distance between them.

State the mathematical formula for Coulomb's Law.

• F = k * (q1 - q2) / r^2

• F = k * (q1 * q2) / r^2

• F = k * (q1 + q2) / r^2

• F = k * (q1 * q2) / r

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

• A, km

• C, m

• B, cm

• D, mm

If the distance between two charges is doubled, how does the electrostatic force between them change?

• The electrostatic force between them decreases by a factor of 2.

• The electrostatic force between them remains the same.

• The electrostatic force between them decreases by a factor of 4.

• The electrostatic force between them increases by a factor of 2.

If the magnitude of one charge is doubled while the other charge remains the same, how does the electrostatic force between them change?

• The electrostatic force between them halves.

• The electrostatic force between them quadruples.

• The electrostatic force between them doubles.

• The electrostatic force between them remains the same.

Two charges of +2C and -3C are placed 5 meters apart. Calculate the electrostatic force between them.

• -108 N

• 50 N

• 10 N

• -15 N

Two charges of +5μC and -8μC are placed 10 centimeters apart. Calculate the electrostatic force between them.

• 120 N

• -80 N

• -288 N

• 500 N

What is the principle behind Coulomb's Law?

• The principle behind Coulomb's Law is the relationship between the force, charge, and distance between two charged objects.

• The principle behind Coulomb's Law is the relationship between the force and velocity of two charged objects.

• The principle behind Coulomb's Law is the relationship between the force and mass of two charged objects.

• The principle behind Coulomb's Law is the relationship between the force and time between two charged objects.

What is the significance of the constant k in Coulomb's Law?

• The constant k determines the direction of the electric field in Coulomb's Law.

• The constant k represents the proportionality factor in Coulomb's Law.

• The constant k represents the distance between two charges in Coulomb's Law.

• The constant k is the unit of charge in Coulomb's Law.

Explain the concept of electric field in relation to Coulomb's Law.

• The concept of electric field in relation to Coulomb's Law is that it is a region around a charged object where a force is exerted on other charged objects.

• The concept of electric field in relation to Coulomb's Law is that it is a region around a charged object where there is no force exerted on other charged objects.

• The concept of electric field in relation to Coulomb's Law is that it is a region around a charged object where the force exerted on other charged objects is directly proportional to the charge of the object.

• The concept of electric field in relation to Coulomb's Law is that it is a region around a charged object where the force exerted on other charged objects is inversely proportional to the distance between them.