13955949
Descrição
Quiz por John Anthony Yumul, atualizado more than 1 year ago
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Criado por John Anthony Yumul
mais de 6 anos atrás
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Questão 1
Questão
The electric potential inside an isolated conductor could be ___________
Responda
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Zero
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Changing
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Constant
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more than one of the choices
Questão 2
Questão
Pushing a positively charged particle towards another fixed positively charged particle.
Responda
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exerts negative work
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exerts positive work
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exerts no work
Questão 3
Questão
The electric flux trough a closed surface depends on the following except ________.
Responda
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magnitude of the charged enclosed by the surface
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the shape of the surface
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magnitude of the charged outside the surface
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more than one of the choices
Questão 4
Questão
The net torque on a current loop subjected to a magnetic field is _________
Responda
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never zero
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always zero
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sometimes zero
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cannot be determined
Questão 5
Questão
The electric field outside a coaxial cable mus be _________
Responda
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zero
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maximum
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same as E field inside the inner conductor
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more than one of the choices
Questão 6
Questão
The delayed reaction of the magnetization with the change of magnetizing force is called ______
Responda
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polarization
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hysteresis
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magnetization
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relaxation time
Questão 7
Questão
The magnetic force must be zero when the velocity is ________
Responda
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perpendicular to B
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zero
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parallel to B
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more than one of the choices
Questão 8
Questão
The electric flux through a surface will be zero when the angle between the electric field and the area unit vector is _______
Responda
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0 degrees
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30 degrees
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180 degrees
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90 degrees
Questão 9
Questão
The polarization vector has the same unit as the __________
Responda
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electric flux
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electric field
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electric flux density
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electric potential
Questão 10
Questão
Two parallel wires are said to have one Ampere if the force per unit length experienced by the wire is _________
Responda
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2 x 10^-7 N/m
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2 x 10^7 N/m
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2 x pi x 10^7 N/m
Questão 11
Questão
The capacitance of an isolated spherical capacitor is independent on its
Responda
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radius
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potential
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charged
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more than one of the choices
Questão 12
Questão
The movement of charges in a vacuum
Responda
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is a form of conduction current
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does not obey Ohm's law
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is electrostatically neutral
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more than one of the choices.
Questão 13
Questão
Inductors _____________ variations in __________ through a circuit.
Responda
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oppose; current
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oppose; voltage
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aid; current
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aid; voltage
Questão 14
Questão
The following are always zero for a conductor in electrostatic equilibrium except
Responda
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net current
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net electric field
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surface charge density
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potetial difference
Questão 15
Questão
A material with higher residual magnetism is said to have a good __________, which is the ability to retain magnetism when magnetizing force to removed
Responda
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hysteresis
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remanence
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magnetization
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dipole moment
Questão 16
Questão
The energy density of an electric field is ________ the energy density of the magnetic field in a vacuum.
Responda
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equal to
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greater than
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less than
Questão 17
Questão
Which of the following is a unit of magnetic field intensity?
Responda
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maxwell
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tesla
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gauss
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oersted
Questão 18
Questão
If the current in a parallel conductor are the same, the 2 conductors will
Responda
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attract
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either repel or attract
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repel
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neither attract nor repel
Questão 19
Questão
If a test charge is moved on an equipotential surface there is
Responda
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zero work
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negative work
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positive work
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a change in potential energy
Questão 20
Questão
The charge in the plates of a capacitor establish _____
Responda
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Current
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Electric Field
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Potential difference
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more than one of the choices
Questão 21
Questão
With steady electric current, as the velocity increases , the charge density ___________
Responda
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increases
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remains the same
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decreases
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becomes zero
Questão 22
Questão
A point charge Qa is moved aong a circular loop around another fixed point charge Qb at a distance of constant radius. The work done is zero ______
Responda
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when the 2 charges have the same magnitude
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when the 2 charges have the same poalarity
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when the 2 charges have opposite polarity
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all of the choices
Questão 23
Questão
Resistance depends on the following except
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dimension
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both the choices
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material
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neither of the choices
Questão 24
Questão
The following statements implies that charges are conserved except
Responda
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charges exist as exact multiple of the charge electron
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the smallest quantity of charge is the charge of an electron
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algebraic sum of all charges in a closed system is constant
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more than one of the choices
Questão 25
Questão
A flux of 10^-8 weber is passing through a surface. There must be ______ magnetic field line/s passing through it.
Responda
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10^8
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1
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10^-8
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0
Questão 26
Questão
When the charge on the plate increases, the capacitance ______
Responda
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increases
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decreases
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remains the same
Questão 27
Questão
If the charges are the same, the forces must be ________.
Responda
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attractive
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zero
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repulsive
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cannot be determined
Questão 28
Questão
The electric field at 4m due to an infinite sheet of charge is ___________ that of the electric field at 8m.
Responda
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half
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twice
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four times
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the same
Questão 29
Questão
COnductance is to electric circuits as _______ is to magnetic circuit
Responda
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magnemotive force
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magnetic flux
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permeance
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permeability
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