Pearson Electrical Fundamentals
Most carbon resistors indicate their electrical resistance by ________
Color coded markings
The fact that voltage can be created by exerting force on a crystal is used for which type of sensor?
Knock Sensor (KS)
Electrical power is calculated by _______.
Multiplying volts by current
Insulators lose electrons in their outer shell easier than conductors.
False
Semiconductors have how many electrons in their valence rings?
Four
What type of material is indicated by this atomic structure?
Insulator
An electrical conductor is an element with ________ electrons in its outer orbit.
Less than 4
Which term describes electrical current resulting from pressure applied to certain crystals?
Piezoelectricity
Voltage supplied to a potentiometer may be called _________.
Reference voltage
Like charges ________
Repel
Which variable resistor is most likely used for a dash light dimmer control?
Rheostat
Carbon and silicon are examples of ________.
Semiconductors
Which of these elements has the least resistance?
Silver
Which device produces electrical current resulting from heating of two dissimilar conductors?
Thermocouple
A potentiometer usually has how many wires?
Three
It is relatively easy to move an electron from the valence ring of a conductor.
True
The outer electron shell is known as a(an) _________.
Valence ring
The _______ is a unit of electrical pressure.
Volt
Which of these is also known as electrical potential?
Volts
Which of these describes electrical power?
Watts
Which unit of electricity does the work in the circuit?
An ampere
Technician A says that a two-wire variable resistor is called a rheostat. Technician B says that a three-wire variable resistor is called a potentiometer. Which technician is correct?
Both Technicians
This diagram indicates current flow using which theory of current flow?
Conventional Theory
What term describes the movement of electrons from one atom to another?
Electricity
The automotive battery is based on the principle of
Electrochemistry
The automotive battery is based on the principle of _______.
Electrochemistry
As temperature increases, ______.
The resistance of a conductor increases
