Ch. 39 Electrical Fundamentals ELECTRICAL
An electrical conductor is an element with ____ electrons in its outer orbit.
Fewer than four electrons
Creating electricity by exerting a force on a crystal is called _____.
piezoelectricity
The fact that a voltage can be created by exerting force on a crystal is used in which type of sensor?
Knock Sensor (KS)
What is the relationship between P, I, and E? Given: P = electrical power in watts I = current flow in amperes E = electrical pressure in volts
P = I x E
Like charges _____.
Repel
a potentiometer, a three-wire variable resistance, is used in which type of sensor?
Throttle Position (TP)
Resistance to the flow of current through a conductor is measured in units called ________.
ohms
Voltage developed due to pressure applied to a crystal is known as ________.
piezoelectricity
A ________ is a two-terminal unit in which all of the current flows through the movable arm.
rheostat
Carbon and silicon are examples of _____.
semiconductors
As temperature increases, __________.
the resistance of the conductor increases
A(an) ________ is a temperature-measuring device.
thermocouple
The _____ is a unit of electrical pressure.
volt
Which unit of electricity does the work in a circuit?
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 Tech A and Tech B
________ are materials with fewer than four electrons in their atom's outer orbit.
conductors
The ampere is the unit used to measure ________.
current flow
Which of the following is an example of an insulator?
fiberglass
Semiconductors are materials with exactly ________ electrons in their outer orbit.
four
The resistance of a conductor ________ as the temperature increases.
increases
