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3 cards from this section. Quick, good the night before a test.
What is the unit of electric current?
It's the same unit used to measure the flow of water.
What does resistivity depend on?
Think of how different materials are better or worse at conducting electricity.
What does Ohm’s Law relate?
Think about the relationship of these quantities.
True or False: Emf and voltage are the same as a force.
Consider what each term describes.
A circuit contains two resistors: one 10Ω and another 15Ω connected in series. What is the total resistance?
Add the resistances directly.
Using a 9V battery connected across a 3Ω resistor, calculate the current flowing.
Identify voltage and resistance to solve.
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