S1 Final Review: Electric Force & Field

Front

What happens when a negatively charged rod touches an electroscope?

Back

The electroscope becomes negatively charged.

Front

Define electric field.

Back

An electric field is a region of space where a charge experiences a force.

Front

What do electric field lines indicate about the charges?

Back

Electric field lines indicate the nature of the charges; if they are the same, the lines will repel.

Front

Which diagram shows the field lines between two like charges?

Back

Diagram B shows the field lines between two like charges.

Front

What charge will a conductor have after being touched by a negatively charged rod?

Back

The conductor will have a negative charge.

Front

What is the formula for electric force between two charges?

Back

F = k * (|q1 * q2| / r^2), where k is Coulomb's constant.

Front

What is Coulomb's Law?

Back

Coulomb's Law states that the electric force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Front

What is the unit of electric field strength?

Back

The unit of electric field strength is Newton per Coulomb (N/C).

Front

How does distance affect electric force?

Back

Electric force decreases with the square of the distance between the charges.

Front

What is the principle of superposition in electric fields?

Back

The principle of superposition states that the total electric field created by multiple charges is the vector sum of the electric fields created by each charge.