4915491
Descrição
Quiz por Joseph Whilden J, atualizado more than 1 year ago
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Criado por Joseph Whilden J
mais de 8 anos atrás
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Questão 1
Questão
The negatively charged particles in an atom are called:
Responda
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Ions
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Protons
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Neutrons
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Electrons
Questão 2
Questão
The positively charged particles in an atom are called:
Responda
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Ions
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Protons
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Neutrons
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Electrons
Questão 3
Questão
the neutrally charged particles in an atom are called:
Responda
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Ions
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Protons
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Neutrons
-
Electrons
Questão 4
Questão
Which of the following choices correctly reflects basic atomic particle placement in an atom?
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Protons in the nucleus with the neutrons and electrons in orbit
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Neutrons and electrons in the nucleus with the protons in orbit
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Protons and neutrons in the nucleus with the electron in orbit
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Protons and electrons in the nucleus with neutrons in orbit
Questão 5
Questão
An electrically unbalanced atom is called:
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An Ion
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A proton
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A neutron
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An electron
Questão 6
Questão
Magnetism is defined as an invisible force with the ability to do:
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Electrical work
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Pneumatic work
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Mechanical work
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Forward and revers biases
Questão 7
Questão
Haphazard alignment of the individual molecules causes the effects of their magnetic poles to:
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Cancel out
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Become stronger
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Generate current
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Create a static charge
Questão 8
Questão
Magnetic lines of force never
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Repel; they attract
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Attract; they join
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Bend; they cross
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Cross; they bend
Questão 9
Questão
Which of the following substances is an insulator:
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Iron
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Gold
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Glass
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Silver
Questão 10
Questão
What is the unit of measurement for movement of electrons through a conductor?
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Volt
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Amp
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Watt
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Ohm
Questão 11
Questão
What does the term current refer to?
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Total resistance present in a circuit
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Amount of electrical pressure in the circuit
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Amount of power being transmitted through a conductor in 1 second
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Quantity of electrons flowing past a given point during 1 second
Questão 12
Questão
What is the unit of measurement for resistance to current flow?
Responda
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Volt
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Watt
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Amp
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Ohm
Questão 13
Questão
What effect will increasing the current have on an electromagnet?
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Strengthens the magnetic field
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Raises the temperature of the coefficient
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Lowers the temperature of the coefficient
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Raises the resistance offered by the conductor
Questão 14
Questão
Which component of a battery generates the negative charge during operation?
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Cathode
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Anode
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Diode
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Electrolyte
Questão 15
Questão
Which component of a battery generates the positive charge during operation?
Responda
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Cathode
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Anode
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Diode
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Electrolyte
Questão 16
Questão
The flow of electrons in a battery is always from the:
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Cathode to the anode
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Anode to the cathode
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Diode to the anode
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Anode to the diode
Questão 17
Questão
If a conductor is passed through a magnetic field so that it will pass through the magnetic lines of force, it will generate:
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Electrical current
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Electrical resistance
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Magnetic resistance
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Thermal coefficient changes
Questão 18
Questão
In a generator, the electrons in the conductor nearest the south pole will be drawn towards the side of the coil that is closest to the
Responda
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Magnetic dipole
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Source of current
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North pole of the magnetic field
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South pole of the magnetic field
Questão 19
Questão
Static charges tend to remain in the localized area of a contact for long periods in
Responda
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Resistors
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Insulators
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Capacitors
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Conductors
Questão 20
Questão
The conductivity of some insulating material is increased by the absorption of
Responda
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Air under low-humidity conditions
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Heat under high-humidity conditions
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Moisture under high-humidity conditions
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Moisture under low-humidy conditions
Questão 21
Questão
What electrical component is designed to offer a predetermined amount of opposition to current flow in a circuit?
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Filter
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Diode
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Capacitor
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Resistor
Questão 22
Questão
What is the most common type of resistor used in electronics?
Responda
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Mica
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Bakelite
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Wire-wound
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Carbon-composite
Questão 23
Questão
Wire-wound resistors are normally used in circuits where power requirements exceed:
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2 watts
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3 watts
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4 watts
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5 watts
Questão 24
Questão
Wire-wound resistors are more accurate than carbon-composition resistors because of their
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Large size
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Extreme cost
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Large current carrying capacity
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Adjustable wire length capability during manufacture
Questão 25
Questão
A two-terminal variable resistor is a
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Rheostat
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Ananomiter
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Potentiometer
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Tapped resistor
Questão 26
Questão
A three-temrinal variable resistor is a
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Rheostat
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Fixed resistor
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Potentiometer
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Tapped resistor
Questão 27
Questão
Insulators are substances with tightly bound orbiting electrons held firmly in place by the nucleus.
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- True
- False
Questão 28
Questão
Select which of the following material that make good conductors:
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Platinum
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Plastic
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Gold
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Glass
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Silver
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Copper
Questão 29
Questão
Which substance has electrons bound loosely to the nucleus and easily freed by a suitable force?
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Conductor
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Insulator
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Electrical force
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Semi-conductor
Questão 30
Questão
Semi-Conductors are used in solid-state devices; their resistance and conductivity fall between insulators and conductors.
Responda
- True
- False
Questão 31
Questão
What is the unit of measure of electrical pressure?
Responda
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Amp
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Current
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Volt
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Ohm
Questão 32
Questão
Chemical batteries generally consist of three parts: an anode, cathode, and electrolyte.
Responda
- True
- False
Questão 33
Questão
When an object gains or loses a large amount of __________________, it develops a "static" charge.
Responda
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Electrons
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Ions
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Protons
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Neutrons
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