Hello.
Today we will talk about middle income.
What is cut on count is the flow of electrons through a conductor.
The water analogy is that current is like the water flowing through a hose.
Count is measured in ambers and show from those.
This illustration when Amber is a large number of electrons flowing past a spot in the conductor and
the conductor in one second.
As you can see in this illustration one Amber equals the number of electrons.
I want to read it in one second.
Um can't in normal electronics can be in the range of hundreds of arms to millions of micros two billionth
of an S Nanos.
You will generally work with 10 tons of amps down to Microsoft's arms in the typical electronic devices.
You can deal with higher value than 10 arms since they require special device for measuring them and
they are mainly used in factories not in everyday electronics or in circuits or common circuits.
So now let's look at current measurements.
There is greatest potential for meter damage when measuring current than any other function.
Just as in voltage there is two kinds of current associated with the voltage AC and DC.
This meter will only measure DC more expensive meter will measure both currents to measure current the
Volt o meter must be inserted into this into the circuit so that the current flows through the meter.
There is no way that you place the positive and negative robs and say I just measured current.
This won't work like voltage you must place it in the circuit not on the circuit.
So we must uh again mention safety during these measurements.
And um we must spend some time to amplify your knowledge in how to use the Volt o meter to measure current.
The right way and we mention that the current must flow through the meter us or both measuring voltage
when it was only necessary to Sam but the voltage surrounding the source generally to have the current
flow through the volt meter an existing circuit must be broken and sold out and the meter probes connected
to either side of the break.
The 4 volt o meter then becomes part of the path through which that comment must flow.
There are two current ranges high up in arms and low and 200 million arms or both two arms and below
internal fuses provide some meta protection for over current situation because there is such a wide
range of current scales.
There are two physical blobs jugs for that oranges.
This allows for better protection.
A hard refused to handle up to the arms of current and a more fragile fuse to protect the sensitive
circuits needed to match up small currents.
Now we will see these two ranges in diameter but we must read that caution.
There must be some resistance in the circuit or the current flow through the circuit will be the maximum
the source will produce and this current level could damage the Volt or meter.
So your Jamal must make sure that there is some resistance.
You must not connect the bolt on Meet up to Mr Khan directly and placed inside the circuit.
In other words do not connect the Volt o meter blobs directly across the battery bro balls in the current
measurement function.
This is useless and it wont.
It will damage your Volt or meter so with no resistance in the circle the voltage source will provide
the full current available to the circuit there is essentially no resistance in the Volt or meter probe
lines.
Therefore if the blobs are connected directly across the battery ball the full current in the battery
will flow through the Volt or meter and wobbly blows a fuse.
So we must make sure that there is some kind of resistance in that circuit.
If the very very isn't your must replace resistance inside that circuit.