DC fundamentals final
black = ___ ohms
0
how to find the total resistance of a parallel circuit
1/RT=1/R1+1/R2...
orange = ___ ohms
2
red = ____ ohms
2
yellow = ___ ohms
4
green = ___ ohms
5
blue = ____ ohms
6
what is 1 coulomb equal to?
6.25 x 10^18 charges
violet = ____ ohms
7
1 horsepower =
746 watts
grey = ____ ohms
8
white = ___ ohms
9
ohms law
E=IR
different ways to describe voltage
EMF (electron moving force), electrical potential, and potential difference force that makes electrons move
symbol for resistance
Omega
spst
Single-pole single-throw
to find the value of the color on the resistor
add the colors
1 unit of current is an
ampere
current is measured in
amperes
path over which current can flow
circuit
two chassis symbols on a circuit are _____
connected
current flows from positive to negative
conventional theory of flow
good conductors of electrcity
copper, gold, aluminum, iron, and silver
in a parallel circuit, ____is not the same on each leg
current
emf
electromotive force
current flows from negative to positive
electron theory of flow
Negative part of an atom
electrons
electrons are easily ____
lost
fuses have _____ resistance
low
neutral part of the atom
neutrons
____ on a parallel circuit is where current divides and separates
nodes
n.c. stands for
normally closed
n.o. stands for
normally open
resistance is measured in
ohms
a circuit is _____if current divides at one node and recombines at a second node
parallel
2 types of variable resistors
potentiometer and rheostat
when you need a resistor, what do you need to know about said resistor
power rating, max voltage, and resistance measurement
positive part of an atom
protons
electrons constantly move trying to find ____
protons(+)
what is the abbreviation for charges
q
ohm =
resistance
opposition to flow of current
resistance
ground symbols
signal ground=circuit ground
gold and silver on a resistor determines ____q
tolerance
Difference of potential
voltage
to find the total resistance in a series circuit
you add the resistances
brown = ____ ohms
1
1 Coulomb per second =
1 unit of current
DPDT switch
double pole double throw
DPST Switch
double pole single throw
current doesnt change in a _____ circuit
series
continuous, no branches
series circuit
what is a resistor?
used to reduce current in a circuit; exhibits resistance in a circuit
good insulators
wood, glass, plastics, mica, cloth, bakelite
how do you find the resistance of a combination circuit?
you break it down and solve the parallel parts first and then find the resistance of the series circuit
