Week 1, Chapter 1 - Principles of Electricity Flashcards
The general name given to every substance in the physical universe is ________.
Matter
The smallest part of an element that retains all of its characteristics is ________.
Atom
The particles that orbit around the center of an atom are called ________.
Electrons
Electrons carry which type of charge; positive or negative?
Negative
Technician A says that electromagnetic induction is the production of electricity when a current is carried through a conductor and a magnetic field is produced. Technician B says current flowing through a conductor such as a copper wire creates a magnetic field surrounding the wire. Which technician is correct?
Both Technicians A and B
Which of the following methods can calculate circuit current?
a. Multiplying amps times ohms
b. Dividing ohms by volts
c. Dividing volts by ohms
d. Multiplying volts times watts
c. Dividing volts by ohms
What causes voltage drop in a circuit?
Increase in resistance
Which of the following is a measure of electrical current?
a. Amperes (Amps)
b. Ohms
c. Voltage
d. Watts
a. Amperes (Amps)
A material with many free electrons is a good ________.
Conductor
A material with FOUR electrons in the valence ring is a ________.
Semiconductor
The CONVENTIONAL (grandpa’s method) theory of current flow says that current flows from ________ to ________.
Positive, Negative
Voltage is which of these items?
a. Applied to a circuit
b. Flowing in a circuit
c. Built into a circuit
d. Flowing out of a circuit
a. Applied to a circuit
The unit that represents RESISTANCE to a current flow is ________.
Ohm
Which of the following characteristic does NOT affect resistance?
a. Diameter of the conductor
b. Temperature of the conductor
c. Atomic structure of the conductor
d. Direction of current flow in the conductor
d. Direction of current flow in the conductor
The sum of the voltage drops in a circuit equals ________.
Source voltage