All Flashcards
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 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 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: