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BASIC ELECTRONICS Today, you will view five videos (about 25 minutes) and fill out
a worksheet as you listen. Afterwards, you will have a few exercises to
complete. Link to videos:
TASK #1 - VIDEOS & WORKSHEET a)
AC stands for
_______________ _______________. b)
DC stands for
_______________ _______________. c)
A common source of AC
is a _______________ ______________. d)
A common source of DC
is a _______________. e)
Cell phones,
computers, flashlights use ________. Beginner Electronics 3 – Closed/Open Circuits (3:18) a)
A ______________
circuit is a path that starts at one of a battery’s terminals, connects one
or more loads such as light bulbs, and then goes on to the other terminal
allowing electricity to flow. b)
An ______________
circuit occurs when one of the connections is removed or disconnected no
longer allowing for electricity to flow. Beginner Electronics 4 – Flow + Resistance (8:26) a)
Electricity is the
flow of ______________ through a wire. b)
______________ is like
the pressure that pushes electrons down the wire. c)
Voltage is measured in
______________. d)
The symbol for voltage
is _____. e)
_______________ is the
flowrate of electrons going down a wire. f)
Current is measured in
amperes which we usually shorten to _______________. g)
The symbol for current
is _____. h)
________________ is a
material’s opposition to the flow of electricity. i)
Resistance is measured
in ________________. j)
The symbol for
resistance is __R__. (The video shows a lower case R but it is
usually an uppercase R.) k)
The symbol for ohms is
_____. Beginner Electronics 5 – Resistors (8:04) a)
A _______________ is
an electronics component that is used in circuits to resist the flow of
current down a path. b)
One k-ohm equals one
kilo ohm equals __________ ohms. c)
One m-ohm equals one
mega ohm equals __________ ohms. d)
We can use the
____________ _____________ on a resistor in order to tell its resistance. e)
A resistor chart such
as below helps us calculate the resistance of a resistor. f) Show the calculation used to calculate the resistance of the
following resistor (2nd example in video):
QUESTION 1 Different materials have different resistances. Materials
can be classified by their resistance into conductors, insulators
and semi-conductors. Use the internet to find a definition of
each term. Also find a few examples of materials that fall in each
category. Conductor: Insulator: Semi-conductor: QUESTION 2 Calculate the resistance of each resistor shown. Note that
the gold band is always the 4th band on these
resistors.
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