Components
A component that consumes electricity.
Load
Current is proportional to voltage and inversely proportional to resistance
Ohm's Law
What is the unit of measurement for current?
Amperes
Current that allows charges to flow in both directions
Alternating Current
What is the resistance needed for an .02A LED with a 1.5V battery?
75 Ohms
Circuit part supplying electricity.
Power Source
Sum of currents entering and exiting a node equals zero
Kirchoff's Current Law
What is the unit of measurement for voltage?
Volts
Looped path for electric charges to flow
Circuit
What is the resistance needed for an .02A LED with a 3V battery?
150 Ohms
Component restricting electron flow
resistor
Sum of voltages in a loop equals zero
Kirchoff's Voltage Law
What is the unit of measurement for resistance?
Ohm's
Measure of how quickly electrons pass a certain point
current
What is the resistance needed for an .02A LED with a 9V battery?
450 Ohm's
Thin metal thread conducting electricity
wire
__________(V)=_________(I) * ___________(R)
Voltage=Current * Resistance
The switch is open, is power flowing through the circuit?
No
Valence electrons that escape orbit of an atom enabling electricity
free electrons
What is the resistance needed for an 20mA LED with a 4.5V battery?
225
3 parts needed for a complete circuit
load, power source, wires
How can I find the proper resistance to use for a load?
Divide the voltage of the power source by the recommended current of the load
How does a multimeter react with a circuit when measuring voltage versus measuring current?
Voltage it is not a part of the circuit, meaning no current is running through it. When measuring current, it becomes a part of the circuit.
Measure of charge movement work between two points
Voltage
If I wanted to use 3 resistors to lower the resistance evenly throughout a circuit with a 9V battery and a 20mA LED, what would be the resistance for each?
75 Ohm's