2.2 - Ohm's Law Ω
2.2 - Ohm's Law Ω
The Goal
The Goal
To understand the connection (and difference) between power and resistance
To learn about resistance in a circuit (and why it's important)
Review
Review
To solve for a variable in a multiplication or division statement, we must perform inverse operations.
a = b*c → a/c = b x/y = z → x = z * y
The Lesson
The Lesson
Resistance:
Alternatively, this video is also very good.
Ohm's Law:
What is Ohm's Law?
The algebra (math) of Ohm's Law
V = IR
Measured in Ohms (Ω)
A power source can only push so hard (voltage). If you can resist the flow (increase resistance) then less current can flow
Summary
Summary
Let's watch an example of resistance using a lightbulb and discover Ohm's Law Ω
Your Task
Your Task
Head to our Hapara Workspace and complete the 2.2 - Ohm's Law activity.
Extra
Extra
Don't forget the ISU!
TEJ2O: 2.2 - Ohm's Law