Home > Flashcards > Print Preview
The flashcards below were created by user
kariefury
on FreezingBlue Flashcards. What would you like to do?

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


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 I/R equal to?
Voltage

What is I^{2}R equal to?
Power = Current^{2} times Resistance

What is IV equal to?
Power = Current times Voltage

What is V^{2}/R equal to?
Power = Voltage^{2} / Resistance (Joules, Watts / Second)

What is a kilowatt hour equal to?
3.6 x 10^{6} J

