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