PHY 112 Exam 3 Questions & Answers
(Grade A+)
_____ occurs when a current carrying coil induced an EMF in itself -
correct answer ✅self-inductance (L)
an inductor stores energy in its _____ -
correct answer ✅magnetic field
In transformers, the rate that power is supplies to both coils is
______ -
correct answer ✅the same
In an RL and RC circuit, the current in the circuit _______ -
correct answer ✅varies with time
when an inductor is "charging" the energy stored is -
correct answer ✅increasing
The EMF and Current in an LR circuit ("charging") are _______ -
correct answer ✅opposite (EMF decreases while current
increases)
, PHY 112 Exam 3 Questions & Answers
(Grade A+)
In an LC circuit, when there is no friction present, the mechanical
energy of the system is ______ -
correct answer ✅conserved
In an LC circuit, energy stored in the _______ is exchanges for
energy stored in the ______ -
correct answer ✅capacitor, inductor
What does Gauss's Law say -
correct answer ✅electric fields must begin on positive charges and
end on negative charges
What does Gauss's Law say for magnetism -
correct answer ✅There are no magnetic monopoles ( a magnet
must have at least one north and one south pole)
What does faraday's law say? -
correct answer ✅a changing magnetic field creates an electric field
What does Ampere Maxwell's Law say? -
correct answer ✅a current or a changing electric field creates a
magnetic field.
(Grade A+)
_____ occurs when a current carrying coil induced an EMF in itself -
correct answer ✅self-inductance (L)
an inductor stores energy in its _____ -
correct answer ✅magnetic field
In transformers, the rate that power is supplies to both coils is
______ -
correct answer ✅the same
In an RL and RC circuit, the current in the circuit _______ -
correct answer ✅varies with time
when an inductor is "charging" the energy stored is -
correct answer ✅increasing
The EMF and Current in an LR circuit ("charging") are _______ -
correct answer ✅opposite (EMF decreases while current
increases)
, PHY 112 Exam 3 Questions & Answers
(Grade A+)
In an LC circuit, when there is no friction present, the mechanical
energy of the system is ______ -
correct answer ✅conserved
In an LC circuit, energy stored in the _______ is exchanges for
energy stored in the ______ -
correct answer ✅capacitor, inductor
What does Gauss's Law say -
correct answer ✅electric fields must begin on positive charges and
end on negative charges
What does Gauss's Law say for magnetism -
correct answer ✅There are no magnetic monopoles ( a magnet
must have at least one north and one south pole)
What does faraday's law say? -
correct answer ✅a changing magnetic field creates an electric field
What does Ampere Maxwell's Law say? -
correct answer ✅a current or a changing electric field creates a
magnetic field.
