PHYS 1260 FINAL VERIFIED STUDY GUIDE
conductor - Answers - electric charges move freely
Insulator - Answers - electric charges that do not move freely
more charge - Answers - bigger force
electric force - Answers - between charges
attractive or repulsive
stronger
gravitational force - Answers - between masses
always attractive
electric and gravitational force - Answers - inverse square laws
acts at a distance (objects don't have to touch)
field forces
electric field is always there but there is no ____ without a test charge - Answers -
FORCE
Positive charge - Answers - electric field lines point away from it
negative charge - Answers - electric field lines point towards the charge
electric flux - Answers - how many electric field lines penetrate a surface
Max electric flux - Answers - when theta = 0
conservative force - Answers - decreases potential energy
gravitational force and electric field - Answers - conservative forces
electric potential differences - Answers - NOT dependent on the charge experiencing
the energy, but DOES depend electric field
occurs between 2 points
equipotential surfaces - Answers - when all points are at the same potential
no work needed to move charge
electric field is perp. to the surface at every point
Dielectric - Answers - reduces the electric field potential difference and increases
capacitance
, Pos. charge in an electric field - Answers - experience a force in the same direction as
the field
high potential to low potential
gains kinetic and lose potential energy
simplifying circuits with capacitors in parallel/ series - Answers - ID whether parallel or in
series
fine equiv. capacitance and redraw circuit
repeat
determine potential difference across charge/energy stored in a capacitor - Answers -
simplify circuit to 1 equiv. capacitance
find charge and potential difference across capacitor
work backwards
when temp increases - Answers - resistivity increases linearly
current flows - Answers - away from positive terminal
EMF (electromotive force) - Answers - devices that increase the potential energy of
charges circulating in circuits
ideal battery - Answers - potential difference across the resistor = potential across the
battery
real battery - Answers - has an internal resistance
when charges move across a resistor - Answers - they lose potential energy
current - Answers - flow of positive charges even though its the electrons moving
negative charge in electric field - Answers - experiences a force in the opposite direction
as the field.
low potential to high potential
gains kinetic energy and lose potential energy
Find net electrical force on a charge - Answers - draw and label each force acting on a
charge
Find X and Y components of each force
Add X and Y components separately
Find magnitude and direction
Find net Electric field at a point - Answers - draw and label field at the point
Find X and Y components
Add X and Y components separately
conductor - Answers - electric charges move freely
Insulator - Answers - electric charges that do not move freely
more charge - Answers - bigger force
electric force - Answers - between charges
attractive or repulsive
stronger
gravitational force - Answers - between masses
always attractive
electric and gravitational force - Answers - inverse square laws
acts at a distance (objects don't have to touch)
field forces
electric field is always there but there is no ____ without a test charge - Answers -
FORCE
Positive charge - Answers - electric field lines point away from it
negative charge - Answers - electric field lines point towards the charge
electric flux - Answers - how many electric field lines penetrate a surface
Max electric flux - Answers - when theta = 0
conservative force - Answers - decreases potential energy
gravitational force and electric field - Answers - conservative forces
electric potential differences - Answers - NOT dependent on the charge experiencing
the energy, but DOES depend electric field
occurs between 2 points
equipotential surfaces - Answers - when all points are at the same potential
no work needed to move charge
electric field is perp. to the surface at every point
Dielectric - Answers - reduces the electric field potential difference and increases
capacitance
, Pos. charge in an electric field - Answers - experience a force in the same direction as
the field
high potential to low potential
gains kinetic and lose potential energy
simplifying circuits with capacitors in parallel/ series - Answers - ID whether parallel or in
series
fine equiv. capacitance and redraw circuit
repeat
determine potential difference across charge/energy stored in a capacitor - Answers -
simplify circuit to 1 equiv. capacitance
find charge and potential difference across capacitor
work backwards
when temp increases - Answers - resistivity increases linearly
current flows - Answers - away from positive terminal
EMF (electromotive force) - Answers - devices that increase the potential energy of
charges circulating in circuits
ideal battery - Answers - potential difference across the resistor = potential across the
battery
real battery - Answers - has an internal resistance
when charges move across a resistor - Answers - they lose potential energy
current - Answers - flow of positive charges even though its the electrons moving
negative charge in electric field - Answers - experiences a force in the opposite direction
as the field.
low potential to high potential
gains kinetic energy and lose potential energy
Find net electrical force on a charge - Answers - draw and label each force acting on a
charge
Find X and Y components of each force
Add X and Y components separately
Find magnitude and direction
Find net Electric field at a point - Answers - draw and label field at the point
Find X and Y components
Add X and Y components separately
