# Resistance.txt

 The flashcards below were created by user kariefury on FreezingBlue Flashcards. What is grounding? Provide pathway for extra electrons to leave What does an Ammeter measure? I current (amps) What are the component units of Amperes? Coulombs / Sec Current equals… ΔQ/Δt Why does the current stop increasing? Resistance in the circuit What is the symbol for resistivity? ρ Rho What is the symbol for ResistANCE? R What is the ResistANCE for a wire? ρL/A When do you get maximum resistANCE for a wire? Large L, Small A R=ρL/A, Hot Wire As the temperature of a conductor increases what happens to resistivity? Increases What are the conditions for minimum resistANCE for a wire? small L, Large A R=ρL/A, Cold Wire What is Ω? Omega, Unit for Ohms What is q/Δt? Current, I What is power? Work/Time What is I/R equal to? Voltage What is I2R equal to? Power = Current2 times Resistance What is IV equal to? Power = Current times Voltage What is V2/R equal to? Power = Voltage2 / Resistance (Joules, Watts / Second) What is a kilowatt hour equal to? 3.6 x 106 J Authorkariefury ID28554 Card SetResistance.txt DescriptionOhm's "Law" Updated2010-07-31T22:32:57Z Show Answers