All Flashcards
What is Electric Current?
The flow of charged particles, driven by voltage (electric potential difference).
What is Electric Permittivity?
Measures how easily an electric field can penetrate a material and how much energy can be stored.
What is Electric Charge?
Fundamental property of matter causing electric forces.
What is a Scalar Field?
Assigns a single value (e.g., temperature, pressure) to every point in space.
What is a Vector Field?
Assigns a vector (e.g., velocity, force) to every point in space. Electric fields are vector fields.
What is Electric Potential Energy?
Energy of a charged particle in an electric field, proportional to charge and voltage.
What happens when like charges are brought near each other?
They repel each other due to electric force.
What happens when opposite charges are brought near each other?
They attract each other due to electric force.
What happens when the distance between two charges increases?
The electric force between them weakens rapidly.
What happens when a positively charged particle moves in the direction of an electric field?
Its electric potential energy decreases.
What happens to the angle θ if the mass of the sphere is doubled in the free response question?
The angle θ decreases.
What are the differences between Gravitational Force and Electromagnetic Force?
Gravitational Force: Always attractive, weaker at short distances, acts on all matter | Electromagnetic Force: Attractive or repulsive, stronger at short distances, acts only on charged particles
What is the difference between Scalar and Vector Fields?
Scalar Field: Assigns a single value (e.g., temperature) | Vector Field: Assigns a vector (e.g., velocity, force)