Transcript V= IR Activity

V= IR Activity
Voltmeters, Breadboards, Resistors
and Batteries
You’re turn to do some experiments!
Now you get to try some experiments of your
own, but first, a quick tutorial on the
equipment you will be using
The equipment you’ll be using:
- Voltmeter
- Breadboard
- Resistors
- 9V battery
Let’s do a quick review…
How to use a voltmeter:
Voltmeter:
- connect either end of the meter to each side of the
load
If you are reading a negative value, you have the
probes switched.
There should be no continuity beeping. If you hear
beeping, STOP what you are doing and ask someone
for help!
Voltmeter
Measuring Voltage
Voltage:
Probes connect to
either side of the
resistor
Breadboards
• You encountered breadboards early in the
year. Let’s review them:
The breadboard
How the holes on
the top of the
board are
connected:
Series
Resistors are connected such
that the current can only take
one path
Parallel
Resistors are connected such
that the current can take
multiple paths
Real data
In reality, the data we get is not the same as what we
get in theory.
Why?
Because when we calculate numbers in theory, we are
dealing with an ideal system. In reality there are
sources of error in every aspect, which make our
numbers imperfect.
Now go have fun!