Card Set Information
Physics Electricity Voltage Resistance Current
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?
What is the symbol for ResistANCE?
What is the ResistANCE for a wire?
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?
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?
What is power?
What is I/R equal to?
What is I
R equal to?
Power = Current
What is IV equal to?
Power = Current times Voltage
What is V
/R equal to?
Power = Voltage
/ Resistance (Joules, Watts / Second)
What is a kilowatt hour equal to?
3.6 x 10