Untitled Flashcards Set

What happens to the force when the distance between two charged bodies increases?

The force becomes smaller.

What does the equation F = k q1 q2 / r^2 calculate?

The electric force between two point charges.

What is the significance of Benjamin Franklin in relation to electric charge?

He named the charge on glass rubbed with silk 'positive'.

What is the charge of an electron?

-1.6 x 10^-19 C.

What is electrostatic induction?

Charging a body without direct contact by influencing its charge distribution.

What is the difference between insulators and conductors in terms of electric charge?

Conductors have many free electrons that can move, while insulators have very few free electrons.

What is the SI unit of electric charge?

Coulomb (C).

What force acts between charges of opposite sign?

Attractive force.

What occurs during the process of grounding a charged conductor?

Electrons move to or from the ground, neutralizing the charge.

What fundamental property of electric charge states it cannot be created or destroyed?

Conservation of charge.

How is electric charge quantified?

As an integral multiple of the elementary charge (e).

What is Coulomb's law?

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

If charge q1 = 2.0 µC and q2 = 8.0 µC are 3.0 cm apart, what is the force acting between them in vacuum?

160 N.

What happens to the force between two charges when they are surrounded by a medium with high permittivity?

The force decreases.

How can you charge a body by friction?

By rubbing two different materials together to transfer charge.

What are electric field lines?

Imaginary lines that represent the direction and strength of an electric field.

What describes the behavior of moving charges in a magnetic field?

They experience a force due to magnetic fields.

What happens when two charged objects are brought near each other?

They exert forces of attraction or repulsion depending on their charges.

What term describes materials with many free electrons?

Conductors.

What is meant by charge quantization?

Electric charge exists in discrete amounts, which are multiples of the elementary charge.

When two charged spheres touch and are separated, what can be concluded about their charges?

They will have the same charge after separation due to charge conservation.

Describe the relationship between electric force and distance according to Coulomb's law.

The electric force is inversely proportional to the square of the distance.

What occurs to charge distribution on a conductor when a charged object is brought near?

The charge distribution polarizes, causing opposite charges to move closer to the charged object.

What is the result of connecting a charged conductor to the ground?

It allows charge to flow to or from the conductor, neutralizing it.

What is the electric potential a measure of?

The work done in bringing a unit positive charge from infinity to a point in an electric field.

What does a positive charge do in an electric field?

It moves in the direction of the field lines.

What are equipotential surfaces?

Surfaces where the electric potential is constant.

What is the basic principle of conservation of electric charge?

The total charge in an isolated system remains constant.

What is meant by 'electric field strength'?

The force per unit charge experienced by a small positive charge placed in the field.

How do like and unlike charges interact?

Like charges repel each other, while unlike charges attract.

What was discovered about electric force between charges by Charles Augustin Coulomb?

It can be attractive for opposite charges and repulsive for same charges.

What charge do glass rods have when rubbed with silk?

Positive charge.