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Elecs 1: Basic Electricity and Magnetism
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Conductors and Insulators
Electronics > Elecs 1: Basic Electricity and Magnetism
54 cards
Electricity
Electronics > Elecs 1: Basic Electricity and Magnetism
96 cards
Electromagnetism
Electronics > Elecs 1: Basic Electricity and Magnetism
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Magnetism
Electronics > Elecs 1: Basic Electricity and Magnetism
94 cards
Cards (401)
An invisible force that can produce heat, light, and motion.
Electricity
The force for _________ is an attraction or repulsion between electric
charges.
Motion
The basic form for a quantity of electricity
Electric Charge
The
closed
path for the movement of charges.
Circuit
Two basic particles of electric charge
Electron
and
Proton
_______ is the smallest amount of electric charge having the characteristic called negative polarity
Electron
The proton is a basic particle with ________.
Positive Polarity
Is it true or false that the neutral condition means equal positive and
negative charges?
True
The smallest particle of the basic elements that form solid, liquids, gases we know as physical substances.
Atom
Central mass of an atom
Nucleus
Proton is _______ times heavier than an electron
1840
Electrons that can move freely from one atom to the next.
Free electrons
Electrons that can move easily from atom to atom in a material.
Conductor
The best conductor.
Silver
A material with atoms in which the electrons tend to stay in their own
orbits.
Insulator
An
insulating material
and also can
store electric charges
Dielectric
An
insulating material
and also can
store electric charges.
Dielectric
A material that conducts less than the metal conductors but more than the insulators.
Semiconductors
Practically all transistors are made of _________.
Silicon
Defined as a substance that cannot be decomposed any further by chemical action.
Elements
Greek word that means a particle too small to be subdivided.
Atom
Semiconductors have _____ electrons in the outermost ring.
4
____ Electrons in the outside ring is a stable structure.
8
A group of two or more atoms.
Molecule
A group of two or more elements.
Compound
The smallest unit of a compound with the same chemical characteristics.
Molecule
Atomic number of oxygen.
8
The most basic particle of negative charge is the
a. Coulomb
b. Electron
c. Proton
d. Neutron
Electron
The coulomb is a unit of
a. Electric charge
b. Potential difference
c. Current
d. Voltage
Electric
charge
Which of the following is not a good conductor?
a. Copper
b. Silver
c. Glass
d. Gold
Glass
The electron valence of a copper atom is
a.+1
b. 0
c. ±4
d. -1
+1
The unit of potential difference is the
a.Volt
b. Ampere
c. Siemens
d. Coulomb
Volt
Which of the following statements is true?
a.Unlike charges repel each other
b. Like charges repel each other
c. Unlike charges attract each other
d. Both b and c
Both b and c
In a metal conductor, such as a copper wire,
a.Positive ions are the moving charges that provide current
b. Free electrons are the moving charges that provide current
c. There are no free electrons
d. None of the these
Free electrons are the moving charges that provide current
A 100 Ω resistor has a conductance, G, of
a.0.01 S
b. 0.1 S
c. 0.001 S
d. 1 S
0.01 S
9. The most basic particle of positive charge is the
a. Coulomb
b. Electron
c. Proton
d. Neutron
Proton
If a neutral atom loses one of its valence electrons, it becomes
Negative ion
Electrically charged atom
Positive ion
Electrically charged atom and positive ion
Electrically charged atom and positive ion
11. The unit of electric current is the
a.Volt
b. Ampere
c. Coulomb
d. Siemens
Ampere
A semiconductor, such as silicon, has an electron valence of
±4
+1
-7
0
±4
Which of the following statements is true?
a.Current can exist without voltage
b. Voltage can exist without current
c. Current can flow through an open circuit
d. Both b and c
Voltage can exist without current
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