(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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The relationship between voltage, current, and resistance: V = I × R
Ohm’s Law
Controls alternator output voltage.
regulator
Generates electrical current while the engine runs; charges the battery.
alternator
an electronic testing instrument that graphically displays electrical signals as a waveform on a screen, showing how voltage changes over time.
oscilloscope
Components connected across the same voltage; current divides among branches.
parallel circuit
the stationary coil of wire inside the alternator
stator
Components connected end-to-end; same current flows through all.
series circuit
Tool used to measure voltage, resistance, and current.
Multimeter (DVOM)
A break or interruption in the circuit preventing current flow.
open circuit
a reversing switch that keeps the motor turning smoothly by flipping the current direction at just the right time.
commutator
Stores electrical energy in chemical form; provides voltage to the system.
battery
Diagnostic code stored by the vehicle’s control module when a fault occurs.
trouble code (DTC)
Electromagnetic switch that moves a plunger or contacts (used in starters).
solenoid
Manually operated device that opens or closes a circuit.
switch
Electrical pressure or potential difference that pushes current through a circuit.
voltage (V)
Bundle of electrical wires in protective covering.
harness
Unwanted electrical drain from the battery when the vehicle is off.
parasitic draw
Protective device that melts to open the circuit when current is too high.
fuse
Unit of electrical power; Power = Voltage × Current.
watt (W)
Any component that uses electrical energy (bulb, motor, heater, etc.).
load
Device that joins electrical wires or components together.
connector
a metal fastener used to secure other fasteners, such as nuts or bolts, and prevent them from loosening due to vibration.
cotter pin
Common return path for electrical current; typically connected to the vehicle chassis.
ground
The flow of electrons through a conductor, measured in amperes (amps).
current (I)
Electrically operated switch used to control high-current circuits with low current.
relay
A complete path with no open circuits; verified with a meter.
continuity
Unit used to measure electrical current flow.
ampere (Amp)
Opposition to current flow, measured in ohms (Ω)
resistance (R)
Converts AC current to DC current inside the alternator.
rectifier diode
a type of non-volatile memory used in control modules (ECUs/ECMs) to store data even when the vehicle’s battery is disconnected.
EEPROM
Stable voltage (usually 5V) supplied by an ECU to a sensor.
reference voltage
A complete path for current to flow.
circuit
Connection point for wiring or components.
terminal
Unintended path of low resistance causing excessive current flow.
short circuit
