Circuits

Question 1

circuit elements that impede the flow of current.

Answer 1

resistor

Question 2

represented on circuit diagrams with a zigzag line or rectangle

Answer 2

resistor

Question 3

add linearly when they are connected in series

Answer 3

resistor

Question 4

strength equals voltage over current according to Ohm’s law

Answer 4

resistor

Question 5

connected in a diamond configuration in a Wheatstone bridge

Answer 5

resistor

Question 6

colored bands indicate their strength

Answer 6

resistor

Question 7

a potentiometer is a variable three-terminal variety of these devices

Answer 7

resistor

Question 8

connected to an inductor and capacitor in an oscillating RLC circuit

Answer 8

resistor

Question 9

produce Johnson–Nyquist noise

Answer 9

resistor

Question 10

wye-delta transform

Answer 10

resistor

Question 11

star-mesh transform

Answer 11

resistor

Question 12

a rheostat is an adjustable type of these

Answer 12

resistor

Question 13

strength is the sum of the reciprocals of their strengths in parallel

Answer 13

resistor

Question 14

Norton’s theorem

Answer 14

resistor

Question 15

Thévenin’s theorem

Answer 15

resistor

Question 16

symbol for these devices is a box with an arrow through it

Answer 16

rheostat

Question 17

store charge

Answer 17

capacitor

Question 18

Leyden jars

Answer 18

capacitor

Question 19

connected to an inductor and resistor in an oscillating RLC circuit

Answer 19

capacitor

Question 20

strength is measured in Farads

Answer 20

capacitor

Question 21

“super” type makes use of Helmholtz double layers

Answer 21

capacitor

Question 22

their reactance is inversely proportional to frequency

Answer 22

capacitor

Question 23

shown as two parallel lines in circuit diagrams

Answer 23

capacitor

Question 24

electrolytic types have a dielectric placed between two parallel plates

Answer 24

capacitor

Question 25

emf produced by is proportional to the negative time derivative of the magnetic flux

Answer 25

inductor

Question 26

consist of a wire wound into a coil

Answer 26

inductor

Question 27

impedance in these devices is proportional to frequency

Answer 27

inductor

Question 28

chokes block AC but allow DC

Answer 28

inductor

Question 29

transformers are composed of two or more around a metal ring

Answer 29

inductor

Question 30

connected to a capacitor and resistor in an oscillating RLC circuit

Answer 30

inductor

Question 31

used to “step up” or “step down” voltage

Answer 31

transformer

Question 32

Eddy currents can lead to energy losses

Answer 32

transformer

Question 33

current that follows a sinusoidal pattern

Answer 33

alternating current

Question 34

converted into DC by a rectifier

Answer 34

alternating current

Question 35

partially developed by Nikola Tesla

Answer 35

alternating current

Question 36

distribution system developed by George Westinghouse

Answer 36

alternating current

Question 37

current flows in only one direction

Answer 37

direct current

Question 38

championed by Thomas Edison

Answer 38

direct current

Question 39

ideally have zero resistance in one direction, and infinite resistance in the other

Answer 39

diode

Question 40

Zener type can function beyond the breakdown voltage

Answer 40

diode

Question 41

represented by a triangle whose point connects to a straight line

Answer 41

diode

Question 42

formed from a single p-n junction

Answer 42

diode

Question 43

light-emitting ones

Answer 43

diode

Question 44

developed by William Shockley

Answer 44

transistor

Question 45

converts alternating current into direct current

Answer 45

rectifier

Question 46

converts direct current into alternating current

Answer 46

inverter

Question 47

diodes are a type of this device

Answer 47

rectifier

Question 48

elusive blue ones use gallium nitride (or most do anyway)

Answer 48

light-emitting diode

Question 49

classified as n-type (free electrons) or p-type (electron holes)

Answer 49

semiconductor

Question 50

impurities added to increase conductivity in a process called doping

Answer 50

semiconductor

Question 51

metalloids are often used for these materials

Answer 51

semiconductor

Question 52

Schottky barrier

Answer 52

semiconductor

Question 53

III-V type contains elements from groups III and V on the periodic table

Answer 53

semiconductor

Question 54

includes quantum dots

Answer 54

semiconductor

Question 55

Fermi level

Answer 55

semiconductor

Question 56

used to measure current

Answer 56

ammeter

Question 57

used to measure potential difference

Answer 57

voltmeter