Deck 2: Electricity

Question 1

The practical unit of resistance is the ______________.

Answer 1

ohm

Question 2

The practical unit for conductance is the ______________.

Answer 2

Siemens

Question 3

A ______________ shows only the symbols for the components and their electrical connections.

Answer 3

schematic

Question 4

The resistance of an open circuit is considered to be ______________ ohms.

Question 5

A motion of positive charges is considered ______________ current.

Question 6

An ______________ is an atom that has either lost or gained one or more valence electrons to become electrically charged.

Question 7

Solar cells use ______________ to generate output voltage from the light input.

Question 8

An electron is the smallest amount of electric charge having the characteristic called negative ______________.

Question 9

A ______________ is a device that converts chemical energy into electrical energy.

Question 10

Opposition that limits the amount of current that can be produced by the applied voltage is called ______________.

Question 11

The resistance of a short circuit is approximately

A) 0 ?
B) 75 ?
C) 15 k?
D) ? ?

Question 12

An open circuit is considered to be

A) 0 ?
B) 75 ?
C) 15 k?
D) ? ?

Question 13

A motion of positive charges is considered

A) ionization
B) polarization
C) conventional current
D) electron current

Question 14

An atom that has either lost or gained one or more valence electrons to become electrically charged is a(n)

A) molecule
B) ion
C) electrolyte
D) joule

Question 15

What is the frequency of a waveform that alternates 60 cycles per second?

A) 60 Hz
B) 0.016 Hz
C) 600 Hz
D) 6 kHz

Question 16

What is produced when light strikes some materials and electrons are emitted?

A) Optical coupling
B) Laser
C) Photoelectricity
D) Hydroelectricity

Question 17

A popular test instrument used to measure voltage, current, or resistance is a(n)

A) oscilloscope
B) frequency counter
C) digital multimeter
D) logic probe

Question 18

All the materials we know, including solids, liquids, and gases, contain two basic particles of electric charge:

A) electron and neutron
B) electron and proton
C) electron and ion
D) proton and ion

Question 19

If a material has very few free electrons, it is a(n)

A) conductor
B) insulator
C) electrolyte
D) ion

Question 20

Which of the following is not an insulator?

A) Rubber
B) Plastic
C) Silver
D) Glass

Question 21

A material that can store a charge is called a(n)

A) conductor
B) insulator
C) electrolyte
D) dielectric

Question 22

What gives the number of protons or electrons required in the atom for each element?

A) Atomic number
B) Ionic number
C) Element nomenclature
D) Proton table

Question 23

The basic unit of charge is the

A) joule
B) siemens
C) coulomb
D) maxwell

Question 24

A typical value of current in an electronic circuit is

A) 10 A
B) 1 A
C) 10 mA
D) 10 ?A

Question 25

Opposition, that limits the amount of current that can be produced by the applied voltage is called

A) filtration
B) reluctance
C) resistance
D) conductance

Question 26

We depend on electricity for lighting, heating, air conditioning, phones, appliances, and computers.

Question 27

A battery is a device that converts electrical energy into chemical energy.

Question 28

Conductors have very few free electrons.

Question 29

An element is defined as a substance that cannot be decomposed any further by chemical action.

Question 30

Semiconductors have five electrons in the outermost ring.

Question 31

The generation of static electricity is also referred to as the triboelectric effect.

Question 32

The basic unit of charge is the coulomb.

Question 33

Potential refers to the rate of doing work.

Question 34

The volt is a measure of the amount of work or energy needed to move an electric charge.

Question 35

A charge in motion is an electric current.

Question 36

A typical value of current in an electronic circuit is 0.01 A.

Question 37

Opposition that limits the amount of current that can be produced by the applied voltage is called reluctance.

Question 38

The unit for conductance is the siemens.

Question 39

A higher value of conductance corresponds to a lower value of resistance.