Physics 122 Exam 2 Updated Questions
And Answers With 100% Correct
Answers Graded A+
QUESTIONS AND ANSWERS
Elctrostatic potentials of continuous charge distribution. ANSWER - must integrate over
the entire object
Scalar
V=(1/4piE0)[integral]dq/r
Field lines and equipotentials are.... ANSWER - always perpendicular to each other
finding magnitude of electric field from potentials. ANSWER - partial derivatives of each
component then write in vector form
E=-(dV/dx)i-(dV/dy)j-(dV/dz)k
charge separation. ANSWER - some process separates charges so you end up with equal
and oppositely charges surfaces
electric potential energy. ANSWER - depends on configuration of positive and negative
charge carriers in the system
depends on the amount of charge that is separated and the distance the separates the charge
carriers
more charge= more epe
greater separation= more epe
, generated by charge separation
potential difference. ANSWER - the electrostatic work done on a paticle carrying a unit of
charge while moving between the points
positive work must be done on a system to.... ANSWER - cause a charge separation of the
positive and negative charge carriers in the system. this work increases the system's electric
potential energy.
charge separating device. ANSWER - move charge carriers against and electric field
where is electric potential energy stored?. ANSWER - in the electric field
capacitor. ANSWER - a system for storing electric potential energy tht consists of two
conductors
positive charge builds up on the plate attached to the positive terminal and negative charge
builds up on the plate attached to the negative terminal.
build up continues until the potential difference between the plates is equal to the potential
difference between the terminals of the battery= fully charged, flow of electrons stops
because there is no difference in potential between the plates and the battery
when not connected to anything= isolated, quantity of charge on each plate is fixed
when connected to batter= potential difference is fixed, charge carriers always arrange so
that the potential across the capacitor equals the potential across the battery
parallel plate capacitors. ANSWER - electric field between the plates is uniform
double magnitude of charge= double magnetic field= double magnetic force= double
electrostatic work= double potential difference between plates
increase plate separation= electric field stays the same, electrostatic work increases,
potential difference increases
And Answers With 100% Correct
Answers Graded A+
QUESTIONS AND ANSWERS
Elctrostatic potentials of continuous charge distribution. ANSWER - must integrate over
the entire object
Scalar
V=(1/4piE0)[integral]dq/r
Field lines and equipotentials are.... ANSWER - always perpendicular to each other
finding magnitude of electric field from potentials. ANSWER - partial derivatives of each
component then write in vector form
E=-(dV/dx)i-(dV/dy)j-(dV/dz)k
charge separation. ANSWER - some process separates charges so you end up with equal
and oppositely charges surfaces
electric potential energy. ANSWER - depends on configuration of positive and negative
charge carriers in the system
depends on the amount of charge that is separated and the distance the separates the charge
carriers
more charge= more epe
greater separation= more epe
, generated by charge separation
potential difference. ANSWER - the electrostatic work done on a paticle carrying a unit of
charge while moving between the points
positive work must be done on a system to.... ANSWER - cause a charge separation of the
positive and negative charge carriers in the system. this work increases the system's electric
potential energy.
charge separating device. ANSWER - move charge carriers against and electric field
where is electric potential energy stored?. ANSWER - in the electric field
capacitor. ANSWER - a system for storing electric potential energy tht consists of two
conductors
positive charge builds up on the plate attached to the positive terminal and negative charge
builds up on the plate attached to the negative terminal.
build up continues until the potential difference between the plates is equal to the potential
difference between the terminals of the battery= fully charged, flow of electrons stops
because there is no difference in potential between the plates and the battery
when not connected to anything= isolated, quantity of charge on each plate is fixed
when connected to batter= potential difference is fixed, charge carriers always arrange so
that the potential across the capacitor equals the potential across the battery
parallel plate capacitors. ANSWER - electric field between the plates is uniform
double magnitude of charge= double magnetic field= double magnetic force= double
electrostatic work= double potential difference between plates
increase plate separation= electric field stays the same, electrostatic work increases,
potential difference increases
