All Flashcards
Label the forces acting on the sphere in the diagram of a charged sphere suspended in an electric field.
1: Tension (T), 2: Gravitational force (mg), 3: Electric force (Fₑ)
What are the steps of charging by friction?
Rubbing objects together transfers electrons, creating charged objects.
What are the steps of charging by conduction?
Direct contact allows electrons to flow, equalizing charges.
What are the steps of charging by induction?
Bringing a charged object near a neutral one redistributes charges within the neutral object.
How do you apply Coulomb's Law?
Identify the charges (q1, q2), measure the distance (r) between them, and use the formula:
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.