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4 cards from this section. Quick, good the night before a test.
What is resistance measured in?
Think about the Greek letter used for ohm.
Does a conductor with a larger area have more or less resistance?
Remember the relationship between area and flow.
What is the unit of resistance?
It's named after a famous physicist.
Increasing the length of a conductor does what to resistance?
Think about the path an electron travels.
Design a simple circuit with three resistors in series: R1 = 1Ω, R2 = 2Ω, and R3 = 3Ω. Calculate the total resistance and discuss how it affects current flow.
Use the concept of series resistance.
A copper wire is 10m long and has a cross-sectional area of 2 mm². If the resistivity of copper is around 1.68 x 10^-8 Ω·m, calculate the resistance.
Use the formula R = ρ(L/A).
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