Test
Electromagnetics (Kahoot Review)
Este test tiene tiempo límite, así que se abre en el reproductor de siempre.
Preguntas del test (29)
1The electric potential inside an isolated conductor could be ___________
- AZero
- BChanging
- CConstant
- Dmore than one of the choices
2Pushing a positively charged particle towards another fixed positively charged particle.
- Aexerts negative work
- Bexerts positive work
- Cexerts no work
3The electric flux trough a closed surface depends on the following except ________.
- Amagnitude of the charged enclosed by the surface
- Bthe shape of the surface
- Cmagnitude of the charged outside the surface
- Dmore than one of the choices
4The net torque on a current loop subjected to a magnetic field is _________
- Anever zero
- Balways zero
- Csometimes zero
- Dcannot be determined
5The electric field outside a coaxial cable mus be _________
- Azero
- Bmaximum
- Csame as E field inside the inner conductor
- Dmore than one of the choices
6The delayed reaction of the magnetization with the change of magnetizing force is called ______
- Apolarization
- Bhysteresis
- Cmagnetization
- Drelaxation time
7The magnetic force must be zero when the velocity is ________
- Aperpendicular to B
- Bzero
- Cparallel to B
- Dmore than one of the choices
8The electric flux through a surface will be zero when the angle between the electric field and the area unit vector is _______
- A0 degrees
- B30 degrees
- C180 degrees
- D90 degrees
9The polarization vector has the same unit as the __________
- Aelectric flux
- Belectric field
- Celectric flux density
- Delectric potential
10Two parallel wires are said to have one Ampere if the force per unit length experienced by the wire is _________
- A2 x 10^-7 N/m
- B2 x 10^7 N/m
- C2 x pi x 10^7 N/m
11The capacitance of an isolated spherical capacitor is independent on its
- Aradius
- Bpotential
- Ccharged
- Dmore than one of the choices
12The movement of charges in a vacuum
- Ais a form of conduction current
- Bdoes not obey Ohm's law
- Cis electrostatically neutral
- Dmore than one of the choices.
13Inductors _____________ variations in __________ through a circuit.
- Aoppose; current
- Boppose; voltage
- Caid; current
- Daid; voltage
14The following are always zero for a conductor in electrostatic equilibrium except
- Anet current
- Bnet electric field
- Csurface charge density
- Dpotetial difference
15A material with higher residual magnetism is said to have a good __________, which is the ability to retain magnetism when magnetizing force to removed
- Ahysteresis
- Bremanence
- Cmagnetization
- Ddipole moment
16The energy density of an electric field is ________ the energy density of the magnetic field in a vacuum.
- Aequal to
- Bgreater than
- Cless than
17Which of the following is a unit of magnetic field intensity?
- Amaxwell
- Btesla
- Cgauss
- Doersted
18If the current in a parallel conductor are the same, the 2 conductors will
- Aattract
- Beither repel or attract
- Crepel
- Dneither attract nor repel
19If a test charge is moved on an equipotential surface there is
- Azero work
- Bnegative work
- Cpositive work
- Da change in potential energy
20The charge in the plates of a capacitor establish _____
- ACurrent
- BElectric Field
- CPotential difference
- Dmore than one of the choices
21With steady electric current, as the velocity increases , the charge density ___________
- Aincreases
- Bremains the same
- Cdecreases
- Dbecomes zero
22A 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 ______
- Awhen the 2 charges have the same magnitude
- Bwhen the 2 charges have the same poalarity
- Cwhen the 2 charges have opposite polarity
- Dall of the choices
23Resistance depends on the following except
- Adimension
- Bboth the choices
- Cmaterial
- Dneither of the choices
24The following statements implies that charges are conserved except
- Acharges exist as exact multiple of the charge electron
- Bthe smallest quantity of charge is the charge of an electron
- Calgebraic sum of all charges in a closed system is constant
- Dmore than one of the choices
25A flux of 10^-8 weber is passing through a surface. There must be ______ magnetic field line/s passing through it.
- A10^8
- B1
- C10^-8
- D0
26When the charge on the plate increases, the capacitance ______
- Aincreases
- Bdecreases
- Cremains the same
27If the charges are the same, the forces must be ________.
- Aattractive
- Bzero
- Crepulsive
- Dcannot be determined
28The electric field at 4m due to an infinite sheet of charge is ___________ that of the electric field at 8m.
- Ahalf
- Btwice
- Cfour times
- Dthe same
29COnductance is to electric circuits as _______ is to magnetic circuit
- Amagnemotive force
- Bmagnetic flux
- Cpermeance
- Dpermeability
Información
- Descripción
- Electromagnetics FInals Period Kahoot Quiz
- Autor
- John Anthony Yumul
- Idioma
- English
- Visitas
- 281
- Historial
- Creado el 28 may 2018 · actualizado el 28 may 2018
- Etiquetas
- Valoración
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