Exam 15: Basics of Electrical Systems

____________________ are materials that resist the flow of current.

A simple on/off switch with one input terminal and one output is a _____type switch.

Wire sizes are being discussed. Technician A says an AWG 20 gauge wire is larger than an AWG 22 gauge wire. Technician B says a metric 1.0 gauge wire is smaller than a metric .8 gauge wire.

What is a solenoid?

Technician A says 42-volt automotive electrical systems can use smaller wires to supply the same amount of power to electrical accessories. Technician B says a 42-volt electrical system can kill you if your skin contacts exposed wiring. Who is correct?

Electrons have a ____________________ charge.

What is a relay?

When an electron leaves the orbit of an atom, the atom then has a positive charge.

Which of the statements concerning parallel circuits is NOT true?

Describe the difference between the terms "electrical" and "electronics."

What is the difference between voltage and current?

What is the name of the formula E = I x R?

A series circuit provides two or more different paths for the current to flow through.

All the following are variable resistors EXCEPT:

Increasing the voltage of an automotive electrical system allows the wires to be smaller yet supply the same electrical power as a low-voltage system with larger wires.

The resistance of the load(s)in an AC [alternating current] circuit is called ____________________.

Switches are being discussed. Technician A says that "pole" refers to the number of output circuits. Technician B says that "throw" refers to the number of input circuits. Who is correct?

Electromotive force is measured in volts.

Name the four basic components of all electrical circuits.

Technician A says current 14-volt systems are rated at 800 W to 1500 W. Technician B says a higher voltage system requires more amperage to produce the same wattage. Who is correct?