Physic 2 (1260) DeWitt Exam 1
Questions with 100% Verified Answers
Capacitance is a constant of - ANSWER- proportionality because it relates
the charge stored on a capacitor directly to the applied voltage, meaning for a given
capacitor, the ratio of charge to voltage remains constant, with the capacitance value
representing that constant.
A capacitor is - ANSWER- a device used to store electrical charge and
electrical energy.
A Capacitor consist of - ANSWER- Two conductors departed by a small
space
Each of the Capacitor conductors carry - ANSWER- a net charge that are
equal in magnitude, but opposite in sign
The net charge on the entire capacitor - ANSWER- Is zero
If charge on conductor increases, - ANSWER- the electric field will increase,
meaning the potential difference between the two conductors will also increase
The relationship between the charge "Q" and the potential difference is -
ANSWER- The two quantities are directly proportional to
Capacitance is - ANSWER- a measure of how much charge a capacitor can
store for a give potential difference
The size and shape of a capacitor determines - ANSWER- the value of its
capacitance
Resistivity=
Length of conductor (m)=
Cross-sectional area of conductor (m2)=
the baseline of resistance is measured at
EMF= - ANSWER- p
l
A
T "underscore zero"
electromotive force
, The conversion of chemical energy in a battery toelectrical energy in a circuit is
achieved by - ANSWER- physical forces doing work on electric charges
(electrons)
Electromotive force is really - ANSWER- the potential difference across
abattery's terminals, and is approximately constant
Electromotive force is not - ANSWER- a physical force (Ex: battery or a
generator)
The voltage rating on a battery is its - ANSWER- Electromotive force value
Electrostatic is the study of electric charge at rest - ANSWER-
Just as gravity is the study of a wide range of gravitational interactions,
electricity is the study of a wide range of - ANSWER- Electrical interactions
due to electricity dealing with current, resistance, voltage.
Electrostatics is a branch of electricity that focuses on - ANSWER- Both
electrical changes and electrical forces when static
due to static being equal in charge and force (equilibrum)
In an electrically neutral atom the number of protons in the nucleus is equal to
the number of - ANSWER- electrons surrounded by the nucleus due to protons
= # of electrons surrounding nucleus and protons attracting = amount of neutrons in a
neutral atom.
The pair of protons in the nucleus of a helium atom - ANSWER- attract a
pair of orbiting electrons due helium being positive (proton) which attract orbiting
electrons (negative)
think back to like charges repeal and opposite charges attract.
Two protons attract each other gravitationally andrepel each other electrically.
The stronger of these two forces is - ANSWER- Electrical due to them being
both positive charges the electrical charge outweighs the gravitational pull.
electrical force stronger than gravitational
The unit of electric charge, the coulomb, is the charge on a - ANSWER- a
specific large number of electrons
Think how many charges makeup 1 Coulomb's?
~E+18e-
When the distance between two charges is halved, the electrical force between
them - ANSWER- quadruples (increases four times)
Questions with 100% Verified Answers
Capacitance is a constant of - ANSWER- proportionality because it relates
the charge stored on a capacitor directly to the applied voltage, meaning for a given
capacitor, the ratio of charge to voltage remains constant, with the capacitance value
representing that constant.
A capacitor is - ANSWER- a device used to store electrical charge and
electrical energy.
A Capacitor consist of - ANSWER- Two conductors departed by a small
space
Each of the Capacitor conductors carry - ANSWER- a net charge that are
equal in magnitude, but opposite in sign
The net charge on the entire capacitor - ANSWER- Is zero
If charge on conductor increases, - ANSWER- the electric field will increase,
meaning the potential difference between the two conductors will also increase
The relationship between the charge "Q" and the potential difference is -
ANSWER- The two quantities are directly proportional to
Capacitance is - ANSWER- a measure of how much charge a capacitor can
store for a give potential difference
The size and shape of a capacitor determines - ANSWER- the value of its
capacitance
Resistivity=
Length of conductor (m)=
Cross-sectional area of conductor (m2)=
the baseline of resistance is measured at
EMF= - ANSWER- p
l
A
T "underscore zero"
electromotive force
, The conversion of chemical energy in a battery toelectrical energy in a circuit is
achieved by - ANSWER- physical forces doing work on electric charges
(electrons)
Electromotive force is really - ANSWER- the potential difference across
abattery's terminals, and is approximately constant
Electromotive force is not - ANSWER- a physical force (Ex: battery or a
generator)
The voltage rating on a battery is its - ANSWER- Electromotive force value
Electrostatic is the study of electric charge at rest - ANSWER-
Just as gravity is the study of a wide range of gravitational interactions,
electricity is the study of a wide range of - ANSWER- Electrical interactions
due to electricity dealing with current, resistance, voltage.
Electrostatics is a branch of electricity that focuses on - ANSWER- Both
electrical changes and electrical forces when static
due to static being equal in charge and force (equilibrum)
In an electrically neutral atom the number of protons in the nucleus is equal to
the number of - ANSWER- electrons surrounded by the nucleus due to protons
= # of electrons surrounding nucleus and protons attracting = amount of neutrons in a
neutral atom.
The pair of protons in the nucleus of a helium atom - ANSWER- attract a
pair of orbiting electrons due helium being positive (proton) which attract orbiting
electrons (negative)
think back to like charges repeal and opposite charges attract.
Two protons attract each other gravitationally andrepel each other electrically.
The stronger of these two forces is - ANSWER- Electrical due to them being
both positive charges the electrical charge outweighs the gravitational pull.
electrical force stronger than gravitational
The unit of electric charge, the coulomb, is the charge on a - ANSWER- a
specific large number of electrons
Think how many charges makeup 1 Coulomb's?
~E+18e-
When the distance between two charges is halved, the electrical force between
them - ANSWER- quadruples (increases four times)
