#1
Which law of thermodynamics states that energy cannot be created or destroyed, only converted from one form to another?
First Law of Thermodynamics
ExplanationEnergy conservation principle.
#2
What is the SI unit of electric charge?
Coulomb
ExplanationUnit of electric charge.
#3
What is the SI unit of magnetic flux?
Weber
ExplanationUnit of magnetic flux.
#4
What is the unit of magnetic field strength?
Ampere-turn per meter
ExplanationUnit of magnetic field strength.
#5
What is the SI unit of magnetic permeability?
Henry per meter
ExplanationUnit of magnetic permeability.
#6
What does the first law of thermodynamics state?
Energy can neither be created nor destroyed.
ExplanationLaw of conservation of energy.
#7
Which law of electromagnetism describes the relationship between an electric field and a magnetic field?
Faraday's Law
ExplanationRelationship between electric and magnetic fields.
#8
Which statement best describes the Second Law of Thermodynamics?
Entropy of the universe tends to a maximum.
ExplanationDirection of natural processes.
#9
Which law of electromagnetism relates the circulation of a magnetic field to the electric current density?
Ampère's Law
ExplanationRelationship between magnetic field and electric current.
#10
What is the relationship between entropy and disorder?
Entropy increases as disorder increases.
ExplanationEntropy's connection to disorder.
#11
What is the formula to calculate the electric force between two point charges?
F = k(Q1 * Q2) / r^2
ExplanationCoulomb's law formula.
#12
Which of the following statements about electromagnetic waves is correct?
They travel at the speed of light in a vacuum.
ExplanationCharacteristic of electromagnetic waves.
#13
What is the Carnot efficiency formula?
η = 1 - Tc/Th
ExplanationEfficiency of heat engines.
#14
What is the formula for the work done in an adiabatic process?
W = ΔU
ExplanationWork done in adiabatic process.
#15
What is the formula for the magnetic force experienced by a charged particle moving through a magnetic field?
F = qvB sin(θ)
ExplanationMagnetic force formula.