electrical chapter 8
Consider two objects with electrical charges. Objects A and B both repel one another. What is the polarity of the charges found on the objects?
A and B are both positive.
Which measurement of electrical flow measures electron movement in number of electrons past a single point in a circuit per second of time?
Amperage
Technician A says electronic circuits use less amperage and often process electrical signals rather than perform the work of lighting, heating, and mechanical movement. Technician B says electrical circuits usually conduct higher amounts of current through heavier conductors and commonly operate high current flow devices, such as solenoids, relays, motors, lights, and more. Who is correct?
Both Technician A and Technician B
Technician A says there are two theories of current flow: the electron theory and the conventional theory. Technician B says it is only important to remember that current flow is described by both concepts. Who is correct?
Both Technician A and Technician B
Technician A says today's electrical system components are no longer separated into distinct systems. Technician B says networking electrical system components add new vehicle features that can enhance safety, performance, and passenger comfort. Who is correct?
Both Technician A and Technician B
Which of the following types of matter are expected to have the fewest electrons in the outer valence orbital?
Conductors
According to conventional electrical theory, which way does electricity move in most commercial vehicle chassis?
From the "hot" insulated wire, through the load, then back to the battery
Consider an atom with 28 protons and 29 electrons. It could be accurately described as:
Negatively charged
Technician A says AC circuits are used in virtually all chassis circuits because a battery can easily store and supply AC current. Technician B says DC current is used to power hybrid drive electric motors. Who is correct?
Neither Technician A nor Technician B
Consider the principle of Joules heating. Which of the following units of electrical measurement changes when amperage increases through a circuit?
Resistance
Which of the following electrical terms is most closely associated with "electrical friction"?
Resistance
Technician A says AC's main advantage is that it can be transmitted farther distances with less resistance and little voltage drop. Technician B says the term resistance is used with AC circuits as well as DC circuits. Who is correct?
Technician A
Technician A says metals typically have lots of easily moved electrons, which make them good conductors. Technician B says liquids cannot function as a conductor. Who is correct?
Technician A
Technician A says that the resistance of a circuit or load determines the amount of amperage flowing through it. Technician B says that the voltage in a circuit determines its resistance. Who is correct?
Technician A
Technician A says the forces of electrostatic repulsion and attraction move electrons through a circuit. Technician B says the movement of electrons and protons from one atom to another is called electricity. Who is correct?
Technician A
Technician A says that Ohm's Law predicts increased circuit resistance as voltage increases. Technician B says Ohm's Law predicts both amperage and voltage in a circuit vary depending on circuit resistance. Who is correct?
Technician B
Technician A says that Ohm's Law predicts that a conductor's resistance increases when amperage increases. Technician B says that Joule's Law predicts a small amount of resistance in a circuit becomes much greater when amperage increases. Who is correct?
Technician B
Which of the following descriptions best describes the electrical term, polarity?
The electrical pressure in a circuit
The concept of amperage refers best to the following
The quantity of electron movement
Which of the following terms best describes the electrical pressure that causes current to flow in a circuit?
Voltage