Deck 1: Quantities and Units

Question 1

The symbol for voltage is:

A) C
B) V
C) R
D) A

Answer 1

V

Question 2

Convert 120 mW to W.

A) 0.00012 W
B) 0.12 W
C) 1,200 W
D) 120,000 W

Answer 2

0.12 W

Question 3

Kilo equals 1,000 times the base unit.

Answer 3

True

Question 4

Which of the following metric prefixes is NOT commonly used in electronics work?

A) pico
B) micro
C) kilo
D) milli
E) tera

Question 5

The unit of measurement for current is the:

A) Ohm
B) Watt
C) Volt
D) Ampere

Question 6

The symbol for a resistor is:

A) R
B) V
C) A
D) C

Question 7

The symbol for Current is:

A) V
B) C
C) A
D) I

Question 8

Convert 5.7 mW to µW.

A) 5,700 µW
B) 57,000 µW
C) 0.057 µW
D) 0.00057 µW

Question 9

Which of the following are common applications of electronics?

A) Automation
B) Computers
C) Communications systems
D) Consumer products
E) All of the above

Question 10

Convert 4.7 mA to amperes.

A) 0.0047 A
B) 47,000 A
C) 4,700 A
D) 0.00047 A

Question 11

An electronic device which stores an electric charge is known as an inductor.

Question 12

The unit of measurement for conductance is the Coulomb.

Question 13

Express the number 10,000 in proper scientific notation.

A) 1.0 × 104
B) 1.0 × 103
C) 10.0 × 103
D) 100.0 × 102

Question 14

The unit of measurement for voltage is the:

A) Watt
B) Ampere
C) Volt
D) Ohm D

Question 15

The symbol µ is an abbreviation for 10-6 or micro.

Question 16

The unit of measurement for resistance is the:

A) Volt
B) Ohm
C) Ampere
D) Watt

Question 17

Convert 10,000 ohms to kΩ.

A) 10 kΩ
B) 1 kΩ
C) 100 kΩ
D) 1000 kΩ

Question 18

The shortcut symbol for Ohms is:

A) Ω
B) .
C) α
D) 6

Question 19

Convert 75 µV to mV.

A) 0.075 mV
B) 0.000075 mV
C) 7500 mV
D) 75,000 mV

Question 20

Inductors store energy in an electrostatic field.

Question 21

Convert the following:
4.7 kΩ =

A) 4.7 × 10-4 Ω
B) 4.7 × 10-3 Ω
C) 4.7 × 103 Ω
D) 47 × 10-3 Ω

Question 22

2.2 kV =

A) 2.2 × 10-3 V
B) 2.2 × 10-4 V
C) 22 × 103 V
D) 2,200 Volts

Question 23

Multiply 99.2 × 10-6)48 × 101) = , .

A) 476 × 10-3, 47.6 micro
B) 4.76 × 10-2, 47.6 nano
C) 4.76 × 10-2, 47.6 milli
D) 4.76 × 10-4, 47.6 milli

Question 24

Subtract 3462 × 100) - 2.22 × 102) = , .

A) 3.24 × 102, 3.24 kilo
B) 3.24 × 103, 3.24 milli
C) 3.24 × 104, 3.24 kilo
D) 3.24 × 103, 3.24 kilo

Question 25

The SI system is :

A) used for scientific work
B) based on a system of fundamental units
C) used for engineering work
D) an international system
E) all of the above

Question 26

Add 430 × 106) + 9.75 × 108) = , .

A) 1.4 × 109, 1.4 Giga
B) 14 × 109, 1.4 Giga
C) 1.4 × 109, 1.4 Mega
D) 14 × 109, 1.4 Giga.

Question 27

Divide 65 × 10-3) =
2.3 × 102)

A) 2.83 × 10-3, 283 micro
B) 2.83 × 10-2, 283 micro
C) 2.83 × 10-5, 283 micro
D) 2.83 × 10-4, 283 micro

Question 28

Express 5.6 × 10-2 in milli, basic units, and micro.

A) 56 milli, 0.056, 56000 micro
B) 5.6 milli, 0.056, 56000 micro
C) 5600 milli, 56, 560 pico
D) 560 milli, 5.600, 5600 micro

Question 29

Convert the following:
3.9 kΩ =

A) 3.9 × 105 Ω
B) 3.9 × 103 Ω
C) 3.9 × 10-4 Ω
D) 39 × 10-3 Ω

Question 30

The symbol for power is:

A) W
B) P
C) Q
D) Z

Question 31

Convert 3.95 × 10-4 A to the closest standard metric prefix.

A) 39.5 mA
B) 3.95 mA
C) 0.395 mA
D) 395 mA

Question 32

Convert 6.8 × 10-5 W to the closest standard metric prefix.

A) 0.68 µW
B) 68 µW
C) 680 µW
D) 6.8 µW

Question 33

Convert the following:
2 × 10-3 Amp =

A) 2 amps
B) 2 microamps
C) 2 milliamps
D) 0.5 milliamps

Question 34

Express 0.004730 = , .

A) 4.73 × 10-6, 4.73 micro
B) M473 × 103, .473 milli
C) 4.73 × 10-3, 4.73 milli
D) 473 × 10-3, 4.73 milli

Question 35

The shorthand method that uses a base number between 1 and 10 is called:

A) decimal
B) scientific notation
C) engineering notation
D) prefix

Question 36

980 microvolts =

A) 980 × 10-3 V
B) 98 × 103 V
C) 9.80 millivolts
D) both A and C
E) none of the above

Question 37

Convert 4,600,000 Ω to Mega Ω.

A) 46 Mega Ω
B) 4600 Mega Ω
C) 460 Mega Ω
D) 4.6 Mega Ω

Question 38

2 µF =

A) 2 × 10-6 F
B) 200 pF
C) 2000 nF
D) both A and C

Question 39

Express the number 51,000,000,000 in proper scientific notation.

A) 51 × 108
B) 5.1 × 1010
C) 5.1 × 109
D) 5.1 × 1011

Question 40

Siemens is a unit for:

A) power
B) resistance
C) conductance
D) voltage