BASIC ELECTRICAL THEORY MODULE 1

BASIC ELECTRICAL THEORY MODULE 1
Everything on Earth that has weight and occupies space is called ______, which is/are
made up of atoms of elements.
A) Energy
B) Matter
C) Elements
D) Compounds - Answers -Matter

When the atoms of elements combine, they produce _____. The smallest particle of
a(n) _____ is called a "molecule".
A) Compounds
B) Elements
C) Energy
D) Matter - Answers -Compound(s)

Atoms contain three types of subatomic particles: Electrons, protons, and Neutrons. The
____ orbit the nucleus.
A) Electrons
B) Neutrons
C) Nuclei
D) Protrons - Answers -Electrons

Because of their weight, ____ actively participate in the transfer of energy.
A) Protons
B) Nuclei
C) Neutrons
D) Electrons - Answers -Electrons

____ do not participate in the flow of energy and they have a positive electrical charge
with lines of force going straight out in all directions.
A) Nuclei
B) Protons
C) Neutrons
D) Electrons - Answers -Protons

The Law of Electrical Charges states that, "Particles with like charges repel each other."
True
False - Answers -True

The Law of Electrical Charges states that, "Particles with unlike charges repel each
other."
True
False - Answers -False

, If an atom contains more electrons than protons, the atom has a negative atomic
charge.
True
False - Answers -True

If two conductive materials in contact with each other are separated, most of the
electrons will return to the original surface before the separation is complete.
True
False - Answers -True

When insulated materials are in contact with each other, electrons move to the surface
of each other, but the protons remain on the original surface.
True
False - Answers -True

When insulated bodies are quickly separated, both display an electrostatic charge
because one surface has an excess of electrons while the other surface has fewer
electrons.
True
False - Answers -True
The north end of a magnet can be determined by hanging a magnet by a string and
allowing it to swing freely.
True
False - Answers -True

The end of the magnet that points to the north is called the "south-seeking pole," and
the opposite end of the magnet is the "north-seeking pole."
True
False - Answers -False

A compass is made so it can easily align the north end of the compass needle to the
earth's magnetic South Pole.
True
False - Answers -True

The reason most metals are not magnetic is because their atoms tend to pair off in
orbits with opposite spins so that their magnetic fields cancel each other.
True
False - Answers -True

Ferrous metals do not contain any iron and therefore cannot be magnetized.
True
False - Answers -False