Coulomb's Law

Front

What is Coulomb's Law?

Back

Coulomb's Law describes the electrostatic force between two charged objects. It states that the force (F) is directly proportional to the product of the magnitudes of the charges (q1 and q2) and inversely proportional to the square of the distance (r) between them: F = k * (|q1 * q2| / r^2), where k is Coulomb's constant.

Front

What is Coulomb's Constant (k)?

Back

Coulomb's Constant (k) is a proportionality constant in Coulomb's Law, valued at approximately 9.0 x 10^9 Nm^2/C^2.

Front

How does distance affect the electrostatic force between two charges?

Back

The electrostatic force is inversely proportional to the square of the distance between the charges. If the distance is halved, the force increases by a factor of four.

Front

What does the 'q' represent in Coulomb's Law?

Back

In Coulomb's Law, 'q' represents the magnitude of the electric charge.

Front

What happens to the force between two charges if both charges are doubled?

Back

If both charges are doubled, the electrostatic force between them increases by a factor of four, since force is proportional to the product of the charges.

Front

What type of charges attract each other?

Back

Opposite charges attract each other (e.g., a positive charge and a negative charge).

Front

What type of charges repel each other?

Back

Like charges repel each other (e.g., two positive charges or two negative charges).

Front

If the electrostatic force between two charges is 0.10 N at a distance of 2 meters, what will it be at 1 meter?

Back

The force will increase to 0.40 N when the distance is reduced to 1 meter.

Front

What is the formula for calculating the electrostatic force between two point charges?

Back

The formula is F = k * (|q1 * q2| / r^2), where F is the force, k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

Front

What is the unit of electric charge?

Back

The unit of electric charge is the Coulomb (C).