AS112 - Homework - Day 1 Flashcards
a charged atom is known as a(n)
Answer 1:
ion
An atom having more electrons than protons will carry a _____ charge.
negative
An atom having fewer electrons than protons will carry a _____charge.
positive
Materials which permit the flow of electrons are referred to as _______ .
conductors
Materials which oppose the movement of electrons are called ________
insulators
The speed of electron movement is considered to be _____ miles per second. This is the same as the speed of _____ .
Answer 1:
186000
Answer 2:
light
When electrons flow in a conductor, they cause a(n) to surround the conductor.
magnetic field
Electron flow is considered to be from the _________ terminal of the battery (or other current source) through the circuit, and return to the ________ terminal of the battery.
Answer 1:
negative
Answer 2:
positive
The is the basic unit of electrical quantity and is equal to 6.28 billion, billion electrons.
Coulomb
When one coulomb of electrons flows past a point in one second, there is a current flow of one .
Ampere
The is the standard unit of electrical resistance, or opposition to current flow.
Ohm
The unit of electrical pressure is known as the
Volt
(EMF/Electromotive Force)
Electrical power is expressed in
Watts
Each unit of electrical measurement may be expressed using a single letter. What letters are used for the following expressions?
Voltage =
Current =
Resistance =
Power =
Answer 1:
E
Answer 2:
I
Answer 3:
R
Answer 4:
P
Write the following numbers using metric prefixes:
126,000,000 ohms = megohms
0.002 amp = milliamps
156,000 volts = kilovolts
0.000000000002 farads = picofarads
115,900,000 hertz = megahertz
326,000 meters = kilometers
Answer 1:
126
Answer 2:
2
Answer 3:
156
Answer 4:
2
Answer 5:
115.9
Answer 6:
326
