Electricity and Magnetism Test

Front

What happens to the electric force between two charges as the distance increases?

Back

Increasing the distance decreases the force.

Front

What is the value of the constant in Coulomb's equation?

Back

k = 9 ·10^9

Front

State Coulomb's Law in your own words.

Back

It states that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

Front

When is the electric force between two charges strongest?

Back

When the charges are close together.

Front

What is the relationship between electric field strength and distance from the charge?

Back

The electric field strength decreases as the distance from the charge increases.

Front

Define electric field.

Back

An electric field is a region around a charged object where other charged objects experience a force.

Front

What is the formula for calculating electric force between two charges?

Back

F = k * (|q1 * q2|) / r^2

Front

What does the variable 'r' represent in Coulomb's Law?

Back

'r' represents the distance between the centers of the two charges.

Front

What is the unit of electric charge?

Back

Coulomb (C)

Front

Explain the concept of electric field lines.

Back

Electric field lines represent the direction and strength of an electric field; they point away from positive charges and toward negative charges.