Exam 12: Conductors and Insulators

What size soldering iron should be used when soldering or desoldering?

The smaller the diameter of a wire

What is the rating that lists the resistance of a metal having the standard wire size of a 1-ft length with a cross-sectional area of 1 cmil?

An atom, or group of atoms that has a net electric charge, either positive or negative, resulting from a loss or gain of electrons is a(n)

Liquids that are good conductors because of ionization are called

______________ of conductors, both wires and printed wiring, can be checked with an ohmmeter.

Switches cannot have more than two poles and two throws.

To reduce the ______________ effect, conductors that have high voltage should be smooth, rounded, and thick.

) Substances that have very high resistance, on the order of many megohms, are classed as

The resistance of a wire conductor is directly proportional to its length and inversely proportional to its cross-sectional area.

Continuity of wires and printed wiring can be tested by using a(n)

The resistance of a wire conductor is ______________ proportional to its cross-sectional area.

What effect occurs when certain metals or ceramic materials are cooled down to very low temperatures to reduce its resistance?

Resistance of a wire is

An ______________ is an atom, or group of atoms, that has a net electric charge, either positive or negative, resulting from a loss or gain of electrons.

The RCA-type plug is universally used in cable television.

The smaller the diameter of a wire, the more current it can carry.

Most wire conductors are silver.

______________ fuses have coiled construction and are designed to open only on a continued overload.

A device constructed of a thin bimetallic strip that expands with heat and in turn opens the circuit is called a