Deck 2: Electrical Quantities, Ohms Law, and Resistors

Question 1

Carbon resistors are made from a compound of carbon graphite and a ____ bonding material.

A) ceramic
B) metal
C) resin
D) glass

Answer 1

C

Question 2

A(n) ____ is the measurement of resistance to the flow of current.

A) amp
B) watt
C) volt
D) ohm

Answer 2

D

Question 3

Fixed resistors have only one ohmic value, but it is adjustable.

Answer 3

False

Question 4

A ____ is a variable resistor that has two terminals.

A) potentiometer
B) rheostat
C) wire wound resistor
D) carbon film

Question 5

Energy cannot be created or destroyed, and its form cannot be changed.

Question 6

A 30-ohm resistor is connected to a 15-V battery. What is the current in the circuit?

A) 0.5 A
B) 1.0 A
C) 1.5 A
D) 2.0 A

Question 7

A complete circuit is often referred to as a(n) ____ circuit.

A) short
B) grounded
C) closed
D) open

Question 8

Metric units of measure are used in the electrical field just as they are in most scientific fields.

Question 9

Ohm's Law states that E = ____

A)
B)
C)
D)

Question 10

Resistors have a power rating in ____ that should not be exceeded or the resistor will be damaged.

A) ohms
B) volts
C) watts
D) amps

Question 11

Which engineering unit means you should multiply by 1,000?

A) tera
B) micro
C) mega
D) kilo

Question 12

A 24-ohm resistor is connected to a six-volt battery. How much power is converted into heat?

A) 1.0 W
B) 1.5 W
C) 2.0 W
D) 2.5 W

Question 13

The impulse of electricity is very slow.

Question 14

The second principal function of resistors is to produce a(n) ____ divider.

A) resistance
B) inductance
C) voltage
D) current

Question 15

The symbol used to represent a resistor on an electrical schematic is standard.

Question 16

In the color code, what value does blue represent?

A) 2
B) 4
C) 6
D) 8

Question 17

The ____ is defined as one coulomb per second.

A) amp
B) watt
C) volt
D) ohm

Question 18

The ____ theory states that current flows from the most positive point to the most negative.

A) negative current flow
B) terminal
C) conventional current flow
D) electron

Question 19

Voltage is actually defined as ____ force or EMF.

A) electromagnetic
B) electric-mechanical
C) electrically maneuverable
D) electromotive

Question 20

The grounded conductor, or ____ conductor, provides the return path and completes the circuit back to the power source.

A) neutral
B) short
C) positive
D) negative