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REVIEW ACDC

Total questions: 78

Worksheet time: 55mins

Name
Class
Date
1.

Potential difference between two test points resulting from the distribution of charge in

the circuit.

(a)  

2.

6 Known Methods of Producing a Voltage.

(a)  

3.

voltage produced by rubbing a certain

material together

a)

Friction

b)

Pressure

c)

Heat (Thermoelectricity)

d)

Light (Photoelectricity)

e)

Chemical Action

4.

Voltage produced by

heating the joint (junction) where two unlike

metals are joined.

a)

Heat

b)

Pressure

c)

Magnetism

d)

Light (Photoelectricity)

e)

Chemical Action

5.

voltage produced by squeezing

crystals of certain substances

a)

Friction

b)

Pressure

c)

Heat (Thermoelectricity)

d)

Magnetism

e)

Chemical Action

6.

Voltage produced by

light striking photosensitive substances.

a)

Friction

b)

Light (Photoelectricity)

c)

Heat (Thermoelectricity)

d)

Magnetism

e)

Chemical Action

7.

Voltage produced by

chemical reaction in a battery cell.

a)

Friction

b)

Light (Photoelectricity)

c)

Heat (Thermoelectricity)

d)

Magnetism

e)

Chemical Action

8.

Produced when conductor moves

to a magnetic field, cutting the magnetic lines of

force of the field.

a)

Friction

b)

Light (Photoelectricity)

c)

Heat (Thermoelectricity)

d)

Magnetism

e)

Chemical Action

9.

Net amount of charge flowing past a

specified point measured in Amperes.

a)

POWER

b)

CURRENT

c)

VOLTAGE

10.

Energy given in a certain amount of time,

usually measured in Watts.

a)

POWER

b)

CURRENT

c)

VOLTAGE

11.

“A current of one amp means that in one second

about _____electrons move through a cross

section of conductor.

a)

6.24x10^18

b)

3.24x10^18

c)

6.24x10^15

d)

3.24x10^15

12.

rate at which electrical energy is

expended or used up or the rate of electric energy

converted into another form.

(a)  

13.

Device that limits the flow of electrons through a

circuit.

(a)  

14.

Variable resistors

(a)  

15.

Potentiometer - __ TERMINALS

a)

3

b)

2

c)

1

16.

Rheostat - __ TERMINALS

a)

3

b)

2

c)

1

17.

used for one-time adjustment

(single turn or multiple turn)

a)

POTENTIOMETER

b)

RHEOSTAT

c)

TRIMMER

18.
a)

FIXED RESISTOR

b)

RHEOSTAT

c)

POTENTIOMETER

19.
a)

FIXED RESISTOR

b)

RHEOSTAT

c)

POTENTIOMETER

20.
a)

FIXED RESISTOR

b)

RHEOSTAT

c)

POTENTIOMETER

21.

magnitude of the direct opposition to

current

a)

Resistance

b)

Tolerance

c)

Derating Factor

d)

Critical Resistance

e)

Taper

22.

resistance value where the

maximum voltage and power rating occurs

a)

Resistance

b)

Tolerance

c)

Derating Factor

d)

Critical Resistance

e)

Taper

23.

Represents Minimum and Maximum

variation of resistance from its rated value.

a)

Power Rating

b)

Tolerance

c)

Derating Factor

d)

Drift

e)

Wiper or Slider Current

24.

refers to the change in resistance with time

(time stability)

a)

Power Rating

b)

Tolerance

c)

Derating Factor

d)

Drift

e)

Wiper or Slider Current

25.

maximum continuous power that

the resistor can dissipate

a)

Power Rating

b)

Taper

c)

Derating Factor

d)

Drift

e)

Wiper or Slider Current

26.

indicates how the power rating of

the resistor decreases as temperature increases.

a)

Power Rating

b)

Taper

c)

Derating Factor

d)

Drift

e)

Wiper or Slider Current

27.

for variable resistors, this is the variation of

resistance as a function of rotation

a)

Power Rating

b)

Taper

c)

Derating Factor

d)

Drift

e)

Wiper or Slider Current

28.

the maximum current that

the wiper can handle.

a)

Power Rating

b)

Taper

c)

Derating Factor

d)

Drift

e)

Wiper or Slider Current

29.

passive electrical component

consisting of a coil of wire which is designed to take

advantage of the relationship between magnetism

and electricity as a result of an electric current

passing through the coil.

(a)  

30.
a)

AIR CORE

b)

IRON CORE

c)

FERRITE CORE

d)

VARIABLE CORE

31.
a)

AIR CORE

b)

IRON CORE

c)

FERRITE CORE

d)

VARIABLE CORE

32.
a)

AIR CORE

b)

IRON CORE

c)

FERRITE CORE

d)

VARIABLE CORE

33.
a)

AIR CORE

b)

IRON CORE

c)

FERRITE CORE

d)

VARIABLE CORE

34.
a)

SERIES

b)

PARALLEL

35.
a)

SERIES

b)

PARALLEL

36.

ability of an inductor to resist changes

in current.

(a)  

37.

SI UNIT OF INDUCTANCE

(a)  

38.

A device used to store an electric charge,

consisting of one or more pairs of conductors

separated by an insulator.

(a)  

39.

is the electrical property of a

capacitor and is the measure of a capacitors ability

to store an electrical charge onto its two plates

(a)  

40.

is also the property of a capacitor

which resists the change of voltage across it.

(a)  

41.

Combination of two or more similar cells, a cell

being the fundamental source of electrical energy

developed through the conversion of chemical or

solar energy

(a)  

42.

Division of cells:

(a)  

43.

 Designed to be used once and discarded

 Electrochemical reaction occurring in the cell

is not reversible

a)

PRIMARY CELLS

b)

SECONDARY CELLS

44.

 Type of cell which can be charged,

discharged into a load, and recharged many

times

a)

PRIMARY CELLS

b)

SECONDARY CELLS

45.

A junction in a circuit where two or more

circuit elements and/or branches are connected

together.

a)

NODE

b)

BRANCH

c)

LOOP

d)

MESH

46.

Part of a network which lies between two

junctions.

a)

NODE

b)

BRANCH

c)

LOOP

d)

MESH

47.

A closed path in a circuit in which no

element or node is encountered more than once.

a)

NODE

b)

BRANCH

c)

LOOP

d)

MESH

48.

A loop that contains no other loop within it.

a)

NODE

b)

BRANCH

c)

LOOP

d)

MESH

49.

A ______ represents the single circuit

elements like resistor, capacitor, inductor, voltage,

or current source.

a)

NODE

b)

BRANCH

c)

LOOP

d)

MESH

50.

represents the single circuit

elements like resistor, capacitor, inductor, voltage,

or current source.

a)

NODE

b)

BRANCH

c)

LOOP

d)

MESH

51.

a point in the circuit where two or

more circuit elements (or branches) are connected.

a)

NODE

b)

JUNCTION

c)

LOOP

d)

MESH

52.

a specific type of node where three or more

components or conductors meet. It is a point of

convergence or divergence within a circuit.

a)

NODE

b)

JUNCTION

c)

LOOP

d)

MESH

53.

Any closed path in the circuit is called as a

______. A ____ is a closed path formed by starting at a

node, passing through a set of nodes, and returning

to the starting node without passing through any

node more than once.

a)

NODE

b)

JUNCTION

c)

LOOP

d)

MESH

54.

is a closed path in the circuit, which

does not contain any other close path inside it.

a)

NODE

b)

JUNCTION

c)

LOOP

d)

MESH

55.

-One of the most fundamental law in

electrical circuits relating voltage, current and

resistance.

(a)  

56.

I = E/R

(a)  

57.

More comprehensive than Ohm’s Law and is

used in solving electrical networks

 Termed as Law of Electric Networks

 Formulated by German physicist Gustav Robert

Kirchhoff

(a)  

58.

“In any electrical network, the algebraic sum

of the current meeting at a point (or a junction) is

zero.”

(a)  

59.



(a)  

60.

“The algebraic sum of the products

and resistances in each of the conductors in any

closed path in a network plus the algebraic sum of

the emf’s in that path is zero.”

(a)  

61.

elements which conduct electricity

very readily

a)

Conductors

b)

Electrical Conductors

c)

Insulators

d)

Electrical Insulators

e)

Semiconductors

62.

– are materials that allow the

essentially free passage of current when connected

to a battery or other source of electrical energy,

_______ have 3 or less valence electrons

Exhibit positive temperature coefficient

Silver is the best conductor

a)

Conductors

b)

Electrical Conductors

c)

Insulators

d)

Electrical Insulators

e)

Semiconductors

63.

have an extremely high resistance to

the flow of electricity

a)

Electrical Semiconductors

b)

Electrical Conductors

c)

Insulators

d)

Electrical Insulators

e)

Semiconductors

64.

– are materials that doesn’t

allow/oppose free passage of current

_____ have 5 or more valence electrons

______ exhibits Negative Temperature Coefficient

Examples are plastic, rubber and dry wood.

a)

Electrical Semiconductors

b)

Electrical Conductors

c)

Insulators

d)

Electrical Insulators

e)

Semiconductors

65.

All matter between insulator

and conductor

a)

Electrical Semiconductors

b)

Electrical Conductors

c)

Insulators

d)

Electrical Insulators

e)

Semiconductors

66.

are materials that have

conductivity about midway between conductors and

insulators.

______ have 4 valence electrons

Examples are Silicon and Germanium.

a)

Electrical Semiconductors

b)

Electrical Conductors

c)

Insulators

d)

Electrical Insulators

e)

Semiconductors

67.

A diode designed to operate in the reverse

breakdown region

Application: voltage regulator

Biasing: Reverse Bias

(a)  

68.

Characteristics:

 Semiconductor device that permits current

to flow in either a forward or reverse

direction.

 The diode consists of a special, heavily

doped p-n junction, designed to conduct in

the reverse direction when a certain

specified voltage is reached.

(a)  

69.

a diode that always operates in

reverse bias and is doped to maximize the inherent

capacitance of the depletion region.

Application:

Variable Capacitor – Tuned Circuits

: Reverse Bias

(a)  

70.

Characteristics:

 The diode whose internal capacitance

varies with the variation of the reverse

voltage.

 It is used for storing the charge.

 Always works in reverse bias, and it is a

voltage-dependent semiconductor device

(a)  

71.

Also known as Hot - Carrier Diode

Forms a metal to semiconductor junction
Application: High-Frequency and Fast Switching

Biasing: Reverse Bias

(a)  

72.

Characteristics:

 Metal-semiconductor diode with a low forward

voltage drop and a very fast switching speed

 Unlike a conventional pn-junction diode which is

formed from a piece of P-type material and a

piece of N-type material, (a)   are

constructed using a metal electrode bonded to

an N-type semiconductor.

 Used in high frequency and fast switching

applications.

73.

Schottky diode’s recovery time ranges from

____ to tens of nanoseconds.

A typical p-n diode has a recovery time of several

_____

(a)  

74.

Characteristics:

 Also known as Esaki diode.

 Type of diode that exhibits the phenomenon

known as negative resistance. When

voltage value increases, current flow

decreases.

 A _________ is a heavily doped p-n

junction diode.

 ______ works based on _____ Effect.

(a)  

75.

diode is a one type of photo detector, used to

convert optical signal into an electrical signal. The

PIN diode comprises of three regions, namely P-

region, I-region and N-region.

P-type layer

Intrinsic layer

N-type layer

(a)  

76.

Characteristics:

 Is a pn junction device that emits light when

forward biased

 Are semiconductor light sources that

combine a P-type semiconductor (larger

hole concentration) with an N-type semiconductor (larger electron

concentration).

(a)  

77.

(a)   wavelengths are in-phase with

respect to space and time. (LEDs emit non-

coherent light)

78.

Characteristics:

 A device that operates in the reversed bias.

 A device that is built to increases its leakage

current when it is exposed to light.

(a)  

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