so in this video i am going to introduce SI units Systeme International all that goes
with them but at the minute let's just call them SI units and let's work out what we already know
because that's what i do with my learners this handout here and the second page that goes with it
is always done at the very start of electrical science and principles and draws on knowledge
from compulsory education so your time at school now i don't expect us to know all of these two
pages in detail at the end of the first lesson which is this section here on SI units because
i know throughout the entire electrical science and principles unit you will pick up the quantity
the mathematical symbol the unit the unit symbol and an understanding of the definition by working
with these throughout your electrical science and principles i use this set of notes as that you
know first moment looking at them and you actually know more than you think you do because of your
time at school so now you're thinking that's great Gaz but i've got a set of these notes well you can
see up the top here i've got the efixx apprentice up and that's the first gem of two gems i'm going
to give you in this video is the fact you can actually download these i'll leave a link in the
description on the efixx apprentice hub there is probably 18 to 20 sets of them my notes that i've
created during my 19 years of teaching that are free to download some of them are 100 pages long
i recommend that you have a look at those whether you be a student or a college lecturer and if it
can help you out i'll be over the moon so this one here you could do before starting your science
and principles units so you can have a little pre-teach to yourself and start understanding
some of the terms that we use but not in any great depth maybe from knowledge that you've had
as i said before at school there are two pages to this okay so i'd expect to download both there's
actually the answers in here as well so i've actually given you on the downloadable section
all the answers that you will need so you can self-check okay but what we we don't need to
do is obviously download the answer section just fill them in and think you've done well but i have
given you the answers as well because i've given you answers just down here so i don't expect my
learners to come up with all of these just from knowledge i expect that knowledge to be jogged by
the fact that at the bottom of this page we have the things that need to be added into each of the
sections as we go through so these three sections here are filled into these three sections here
that helps doesn't it because i'm sure we're familiar with this symbol here for degree
c we might be familiar with this one here the omega symbol representing ohms we might have heard
words like the ampere kilometre we might have used a lowercase m in different parts of our science or
mathematical lessons and it helps jog our memory for putting them in what i recommend we do when we
start to populate this page and this page is that we use this section and we cross them off as we go
and then we get down to the fact when we're down to a couple it might be powers of elimination
means that you can insert the correct word or symbol into the right section
so let's have a look at hopefully ones that might be a little bit easier to start with i have
tried to leave in the very difficult ones when we're looking at a word there that looks like
weber is actually veber we've used to tesla now maybe a little bit more because they're
a vehicle company name that's not quite how it's probably been made the most famous and i'm sure
you'll get to that in your electrical science and principles but that section now might have been
difficult for you to fill in look that's already filled in in its entirety so i've tried to make
this a good start to your electrical science and principles from the knowledge you already know
so the first quantity i've got is current the mathematical symbol my son's currently doing is
uh GCSE and i noticed that ohm's law is in there so that's great so hopefully if you just left post
uh sorry uh compulsory education and gone into your college life or you were obviously training
retraining as an adult at least you've heard the the the quantities used between ohm's law voltage
current resistance etc and this is where it links in so we've got current mathematical symbol so in
a formula you see the uppercase i the units so you've got to be thinking about what's that in
what if you look at the one underneath it which is potential uses v and volts you've got current i
so you've got to be thinking about what that is measured in what units do we measure current in
and you think just having a minute so i'll come back and then i can start looking through my list
until i see things that maybe the posh word is the ampere so you might think amps i'll give you that
but amperes so you might remember that from school or from working life that that's actually amperes
so you can put that into there and then you've got to think about what we put on the end of
the number so if you had 10 amperes what symbol do you put on the end again you might
be thinking i can't remember look in section three here because we're obviously in column
three section three and you've got to be looking down there to think if i was measuring 10 amperes
possibly i would put an uppercase a on the end in order to represent that those 10 are amperes
or amps okay depends on where you want to go with that so that's how it works with this set of notes
okay so first gen being you can download these from the efixx apprentice hub along with other
notes i've produced and i'll be happily for you to do so and i'd love it if you did do it
gives you a pre-teach so when you come and you do your electrical science and principles in lesson
you could have filled this in from knowledge that you gained at school and self-checked yourself
against the the answers that are available also in the download giving you a head start maybe on some
of your colleagues in class but i said there was a second gem not just the download there is a second
gem my good friend and colleague Joe Robinson has his own electrical science and principles channel
and he has got a playlist on SI units and he runs through all of the SI units that i've covered in
my handout all of these and he puts a little bit of meat on the bone to start you off so in
other words he will go and say resistance is the opposition to current flow and he'll give
a little bit of detail the flow of electrons in a circuit a flow of electrons in a circuit and then
explain how that is quantified as the ampere it will talk about the number of cycles per second
of an AC waveform which links into things such as hertz hertz and then when we look down here we're
looking for frequency as we go through so there's two gems for you you can download this document
you can work through it from knowledge you had at school great you can think to yourself i want to
take a stage further i'll leave a link to Joe's channel in the description to this video if for
some reason i forget just check out Joe Robinson Training on YouTube okay and you will see that
joe's done a playlist on SI units you can take your knowledge a little bit further how incredible
would it be to start your science units either at level one level two or level three of your
studies it all comes down to the SI units and the understanding of those as the first building block
how great would it be that you went into lesson already having a small understanding or a larger
one depending on how many videos you've watched of Joe from downloading the efixx apprentice hub
download by looking at this video filling in the section here and then deciding to take it further
and look at the videos that Joe has produced so this is the start of the electrical science
and principles the SI units okay i hope this handout and obviously joe's videos will help you
be very successful within that unit and as always i hope this video has been some help
you