Electric Charges and Fields Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the principle that describes the net electric force acting on a charge due to multiple other charges?

Coulomb's Law
Superposition principle (correct)
Gauss's theorem
Conservation of charge

Which of the following correctly describes electric field lines?

They are always straight lines, regardless of the charge distribution.
They originate from negative charges and terminate at positive charges.
They indicate the direction of the electric field and are denser where the field is stronger. (correct)
They only exist in the presence of a magnetic field.

What does Gauss's theorem relate to in terms of electric fields?

The flux of the electric field through a closed surface to the charge enclosed. (correct)
The variation of electric field strength in a vacuum.
The motion of charged particles in a magnetic field.
The relationship between electric potential and kinetic energy.

For which of the following configurations would the electric field inside be zero?

<p>Uniformly charged thin spherical shell (B)</p> Signup and view all the answers

What is the primary consequence of placing an electric dipole in a uniform electric field?

<p>The dipole will experience torque causing it to align with the field. (B)</p> Signup and view all the answers

Flashcards

Conservation of electric charge

The amount of electric charge remains constant in an isolated system. It can be transferred between objects, but the total amount remains the same.

Coulomb's Law

The force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. It acts along the line joining the two charges.

Electric field

The electric field at a point is a vector quantity that represents the force experienced by a unit positive charge placed at that point.

Gauss's theorem

Gauss's theorem states that the total electric flux through any closed surface is proportional to the total electric charge enclosed by the surface.

Signup and view all the flashcards

Electric Dipole

A dipole is a pair of equal and opposite charges separated by a small distance. The dipole moment is a vector quantity representing the strength and direction of the dipole.

Signup and view all the flashcards

Study Notes

Electric Charges and Fields

Electric charges and their conservation: Coulomb's law - force between two point charges. Forces between multiple charges; superposition principle and continuous charge distribution.
Electric field, electric field due to a point charge, electric field lines.
Electric dipole, torque on a dipole in a uniform electric field. Electric flux, statement of Gauss's theorem.
Applications to find field due to infinitely long straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell (field inside and outside).