DC fundamentals final
black = ___ ohms
0
brown = ____ ohms
1
1 Coulomb per second =
1 unit of current
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
DPDT switch
double pole double throw
DPST Switch
double pole single throw
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
current doesnt change in a _____ circuit
series
continuous, no branches
series circuit
ground symbols
signal ground=circuit ground
gold and silver on a resistor determines ____q
tolerance
what is a resistor?
used to reduce current in a circuit; exhibits resistance in a circuit
Difference of potential
voltage
good insulators
wood, glass, plastics, mica, cloth, bakelite
to find the total resistance in a series circuit
you add the resistances
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