PHYS 1402 Review Flashcards
What are the main topics in 1402?
-Electrostatics
-Electric circuits
-Magnetism
-Simple Harmonic Motion
-Waves
What are two types of charge?
Positive and negative
What causes an electric force?
An electric charge
What are the different electric forces?
Attraction and Repulsion
What does Coulomb’s law represent?
It represents the force between two charges
What is the Coulomb’s law equation?
F=(kQ1Q2)/r^2
Where does the charge reside on a conductor?
All the charge resides on the surface with no net charge inside
What is an electric field?
It is a field that exists around every charge
What happens when two charges are close?
The electric field from the first charge exerts an electric force on the second charge
What does electric field represent?
Represents the amount of electric force per charge
What is the equation for electric field?
E=F/Q
What is the electric potential?
It is the amount of energy needed to move a charge from a point to a new location against an electric field
What is the equation for electric potential due to a point charge?
V=(kq)/r
What is the equation for electric potential due to electric potential energy?
V=U/q
What is the definition for current?
The rate at which electric charge flows through an electric circuit at a certain point
What are capacitors?
Devices for storing charge
What are resistors?
Electrical components that dissipate energy
What kind of charges do magnetic fields surround?
Moving charges
What also has a magnetic field?
Any material with permanent magnetism is surrounded by a magnetic field
How does a magnetic field exert a force?
Exerts a magnetic force on a moving charge
-but not when the charge is moving in the same direction as the magnetic field
What is magnetic induction?
It is the production of an induced electromotive force (EMF) across a conducting loop caused by a change in magnetic flux
What is magnetic flux?
It is the total magnetic field which passes through a given area
What does Faraday’s Law give you?
The magnitude of emf
What does Lenz’s Law give you?
The direction of the induced current
In what direction does the current/emf induced by a changing magnetic flux point towards?
The direction is pointed to whatever opposes the change in flux
What is a simple harmonic motion?
Is a type of motion in which the restoring force on the moving object is directly proportional to the magnitude of the object’s displacement
How does the restoring force act?
Acts towards the object’s equilibrium position
What can waves be thought as?
As singular harmonic motion happening at different, connected points simultaneously
What are longitudinal waves?
The motion of the wave happens in the same direction as the direction of the wavelength
What are transverse waves?
The motion of the waves happen perpendicularly to the direction of the wavelength
