Formulas Quiz Flashcards
What is a Series Circuit?
a circuit with one path
What is a Parallel Circuit?
a circuit with multiple paths
What does (V) Stand For?
voltage
What is the Diagram Symbol for a Voltmeter?
(V)
What is Voltage Measured In?
volts
What is the Voltage Law for a Series?
VT = V1 + V2 + V3 + V4
What is the Voltage Law for a Parallel?
VT = V1 = V2 = V3 = V4
What is used to Measure Voltage?
a voltmeter
What is the Diagram Symbol for an Ammeter?
(A)
What is Current Measure In?
amps
What is the Symbol for Current?
(I)
What is the Current Law for a Series?
IT = I1 = I2 = I3 = I4
What is the Current Law for Parallel?
IT = I1 + I2 + I3 + I4
What does (R) Stand For?
resistance
What is the Diagram Symbol for a Resistor?
\/\/\/\/
What is Resistance Measure in?
ohms
What is Resistance Measured With?
an ohmmeter
What is the Resistance Law of a Series?
RT = R1 + R2 + R3 + R4
What is the Resistance Law of Parallel?
1/RT = 1/R1 + 1/R2 + 1/R3 + 1/R4
How Many Milli Amps are in one Amp?
1000
If the Voltage Increases and the Resistance Increases…
the current decreases
If the Voltage is Constant and the Resistance Decreases…
the current increases
If the Resistance is Constant and the Voltage Increases…
the current increases
If the Resistance is Constant and the Voltage is Decreased…
the current decreases
V =
potential difference
What is the Formula for Voltage?
V = I x R
What is the Formula for Resistance?
R = V/I
What is the Formula for Current?
I = V/R
If a Lightbulb is Added and the Bulbs Got Dimmer…
it’s a series circuit
If a Lightbulb is added and the Bulbs All Stayed the Same…
it’s a parallel
There are Three Lightbulbs in a Circuit, a Switch is Opened, and Two of the Bulbs Stay On…
it’s a parallel
Explain Energy Transfer
when an energy source is connected to a circuit, electrons in the conductor push, or repel other electrons nearby. as soon as one moves, all of them move
Define Electrochemical Cells
a batter is a combo of electrochemical cells. each cell is a package of chemicals that converts chem energy to electric energy
Define Electrolyte
a liquid or paste that conducts
Define Wet Cell
a liquid electrolyte (cars)
Define Dry Cell
a paste electrolyte (flashlight)
Define Electrode
metal strips that react with the electrolyte
Define Terminals
end points in a cell or battery where we make a connection
Define Fuel Cell
an electrochemical cell that generates electricity from a chemical reaction
What is Potential Energy
energy stored in an object
What are the 5 Factors That Affect Reistance
- material
- temperature
- length
- cross sectional area
What is the Formula for Energy?
voltage x current x time (s)
What is the Formula for Voltage if Given E, I, and T?
e / i x t
What is the Formula for Time if you are Given E, V, and I?
e / v x c
What is the Formula for Power?
p = e/t
What is the Formula for Energy if Given p, and t
e = p x t
What is the Formula For Time if Given P, and E
t = e/p
What is the Formula for Efficiency?
% eff = OE/IE x 100
What is the Formula for OE if you are given IE, and % eff
OE = IE/% eff
What is the Formula for IE if you are Given OE and % eff
IE = OE/% eff
What is the Formula for Cost?
C = power x time x rate
What is the Formula for Time if Given C, P, and Rate?
cost / p x r
What is the Formula for Power if Given C, T, and Rate?
cost/rate/time
What is the Formula for Rate if you are Given the Cist, Time and Power?
rate = cost/time/power
