Q.1
Electricity flows well through "conductors." A good example of a conductor is ___________________.
  • metal
  • wood
Q.2
Electricity does not flow well through insulators. A good example of an insulator is _________________.
  • plastic
  • metal
Q.3
A material through which heats or electricity flows easily.
  • electric current
  • radiation
  • condutor
  • insulator
Q.4
A positive ion is an atom with more electrons than protons
  • TRUE
  • FALSE
Q.5
It is a reserve of chemical energy that can be transformed into electrical energ
  • battery
  • utilizer
  • wire
  • All of above
Q.6
Resistor
  • A flow of electricity through a conductor
  • a path through which electricity can flow
  • a device that can open or close a circuit
  • an object in an electrical circuit that resists the flow of energy
Q.7
A material that slows or stops the flow of energy, such as thermal energy, electricity and sound.
  • electric current
  • radiation
  • condutor
  • insulator
Q.8
Como son la cupla C y la velocidad V, cuanto un vehículo eléctrico esta usando freno regenerativo
  • +C y +V
  • -C y -V
  • -C y +V
  • -C y -V
Q.9
Un extractor presenta una cupla resistente similar a la funcion matematica:
  • y=x+by=x+by=x+b
  • Ninguna de las anterisores
  • $y=\frac{a}{x}$
  • y=x²+cy=x^2+cy=x²+c
Q.10
Que motor es de tracción por excelencia
  • Motor síncrono
  • Motor shunt
  • Motor serie
  • Motor asíncrono
Q.11
La ecuación del momento de inercia equivalente rotacional es:
  • J=Jm+J1Z12​+J2​Z12Z22+...+Jn​Z12Z22...Zn2J=Jm+\frac{J1}{Z1^2}​+\frac{J2​}{Z1^2Z2^2}+...+\frac{Jn​}{Z1^2Z2^2...Zn^2}J=Jm+Z12J1​​+Z12Z22J2​​+...+Z12Z22...Zn2Jn​​
  • Ninguna de las anteriores
  • $J=m\left(\frac{v}{w}\right)^2$
  • $J=m\left(\frac{v}{w}\right)^2+Jm+\frac{J1}{Z1^2}+\frac{J2}{Z1^2Z2^2}+...+\frac{Jn}{Z1^2Z2^2...Zn^2}$
Q.12
The loss of an unbalanced electric charge is an
  • electric force
  • electric field
  • electric discharge
  • All of above
Q.13
Metals such as copper, iron, gold, and silver are ...
  • conductors
  • brittle
  • insulators
  • resistors
Q.14
When objects have equal numbers of positive and negative charges, they are
  • positively charged
  • negatively charged
  • electrically neutral
  • unbalanced
Q.15
Which of the following an insulator?
  • copper
  • wood
  • silver
  • salt water
Q.16
What parts of an atom are in the nucleus?
  • Protons
  • Neutrons
  • Electrons
  • Protons and Neutrons
Q.17
A metal spoon is an example of _____.
  • a conductor
  • an insulator
Q.18
The purpose of the power source is to push electrons through the electric circuit.
  • True
  • False
Q.19
Click any that are examples of power sources.
  • wall outlet
  • generator
  • battery
  • All of above
Q.20
An object that is positively charged contains more protons than electrons.
  • True
  • False
  • I need more information
  • All of above
Q.21
When a switch is closed, it will complete a circuit and allow electricity to flow.
  • True
  • False
Q.22
What object could a switch be compared to?
  • a fan blade
  • a roller coaster
  • a drawbridge
  • a belt buckle
Q.23
The purpose of a load is to change electrical energy to another type of energy that can be used by people.
  • True
  • False
Q.24
If an object has a net charge of +this means it has
  • lost 2 electrons
  • gained 2 electrons
  • lost 2 protons
  • gained 2 protons
Q.25
How many paths for the flow of electricity does a simple electric circuit have?
  • 1
  • 2
  • 3
  • 4
Q.26
How would the movement of electrons in electric current be described?
  • sit still
  • build up
  • jump
  • steady flow
Q.27
What is the path for the flow of electricity called?
  • circuit
  • charge
  • discharge
  • components
Q.28
What other word means component?
  • path
  • part
  • power
  • pop
Q.29
If a substance has an excess number of electrons on its surface, what type of charge does it have?
  • A negative charge
  • A positive charge
  • A neutral charge
  • A nuclear charge
Q.30
Electric charges that are different _______ each other.
  • Attract
  • Repel
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