The rate of electron flow in a circuit.

The he opposition to free electron flow in a circuit.

A short circuit results when there is

Tech A says an insulator is a substances that resists the flow of electricity. Tech B says the atoms in an insulator are very stable and resist electron movement. Who is right?

Has only one continuous path of conduction for current.

Also called a one wire circuit, uses the metal structure of the vehicle to return electricity to the power source.

Has more than one path for current. Two or more loads are placed on independent paths in the circuit.

A combination of a series and parallel circuit.

$$E=I\times R$$

$$R=E\div I$$

$$I=E\div R$$

A variable resistor with two electrical terminals; alters resistance value.

A variable resistor with three electrical terminals.

A transistor is a semiconductor device that regulates current or voltage in a circuit.

A storage device for electrons, or electrical energy.

Protects a circuit from damage caused by excess current.

Semiconductor device that regulates current or voltage in a circuit.

Diode

Test lights are used to check a circuit for power or continuity.

Commonly used to draw current out of the battery while measuring voltage.

An oscilloscope is a diagnostic tool that displays a line pattern, or trace, representing circuit voltages in relation to time.

Shows how 12-volt battery current feeds to the main components or sections of the vehicles electrical system.

A large diagram that contains symbols for all major wiring and electric/electronic components on a vehicle.

Contains only the components and wires for a particular circuit.

An open circuit can be caused by a:

Power must be disconnected from the component or portion of the circuit before being tested with an ohmmeter.

Tech A says silver is a good electrical conductor. Tech B says iron is a good electrical conductor. Who is right?

Tech A says the term hot wire of an electric circuit refers to wires routed near the engine and exhaust system, which are manufactured with twice the amount of insulation. Tech B says the design of the 12-volt electrical system in vehicles built after the year 2000 prevents the use of a grounding method. Who is right?

All of the following are parts of an electric motor except:

All of the following are photonic devices except:

Tech A says automotive wiring is usually between 4 and 12 gage. Tech B says automotive wire size must be matched to the circuit load. Who is right?

Smaller diameter wire has more resistance than a larger diameter wire of the same material and design.

Resistance decreases as the length of the wire increases.

Tech A says a vehicles main wiring diagram is the best option to use to trace the inner wiring of a vehicles alternator in its charging system circuit. Tech B says a location grid is used as a language translator for the wiring diagrams from foreign vehicle manufactures. Who is right?

A particular diode has a reading of infinite ohms in both directions. Tech A says this indicates the diode is on good condition. Tech B says this indicates that the diode has an internal short. Who is right?