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28 terms

Electricity and Magnets

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Rate of flow of positive charge through a conductor
What is electric current?
Electrical Potential Difference
What is the first condition for continuous current to flow?
Complete Circuit
What is the second condition for continuous current to flow
Volts
What is Electrical Potential Difference measured in?
The work done in the source on each coulomb of charge to give them energy
What does voltage measure?
Resistance
What determines how much current will flow through each part of a circuit?
Opposition to flow of charge
What is resistance?
V=IR
What is Ohm's Law?
I
In Ohm's Law, what is the dependent variable?
Increase voltage, reduce resistance
What are two ways to increase current through a circuit?
Redox Reactions
What causes electrochemistry?
Batteries
What is electrochemistry primarily used in?
Electrochemistry, Electromagnetism, Photoelectricity, Thermoelectricity, Piezoelectricity
What are the five sources of voltage?
Running wires around magnets
How does electromagnetism work?
Audio Devices
What is electromagnetism primarily used in?
Cameras and Lights
What is photoelectricity primarily used in?
Thermometers and Coolers
What is thermoelectricity primarily used in?
Microphones and Printers
What is piezoelectricity primarily used in?
Additive
In a series, what is the voltage?
The same
In a series, what is the current?
Additive
In a series, what is the resistance?
Divide the voltage of the source by the Resistance of the circuit
How do you find the current furnished by the source?
Additive
In parallel, what is the current?
The same
In parallel, what is the voltage?
Inversely Additive
In parallel, what is the resistance?
The largest
In a parallel circuit, which lightbulb is the brightest?
The smallest
In a series circuit, which lightbulb is the brightest?
Power
What variable determines the brightness of a lightbulb?