Q.1

A circuit breaker is a

  • fuse
  • switch
  • resettable protective device
  • resistor
Q.2

Which of the following is not a type of energy source?

  • generator
  • rheostat
  • solar cell
  • battery
Q.3

Eight-tenths coulomb passes a point in 4 s. The current in amperes is

  • 1.6 A
  • 16 A
  • 2 A
  • 0.2 A
Q.4

An ammeter is an electrical instrument used to measure

  • current
  • voltage
  • resistance
  • none of the above
Q.5

When placed close together, two positively charged materials will

  • attract
  • become neutral
  • become negative
  • repel
Q.6

The conductance of an 8 ohm resistance is

  • 12.5 mS
  • 8 mS
  • 12 S
  • 125 mS
Q.7

When the current is 2.5 A, how many coulombs pass a point in 0.2 s?

  • 12.5 C
  • 1.25 C
  • 0.5 C
  • 5 C
Q.8

Electrons in the outer orbit are called

  • nuclei
  • valences
  • waves
  • shells
Q.9

The colored bands for a 4,ohm resistor with a ten percent tolerance are

  • yellow, violet, red, gold
  • yellow, violet, orange, gold
  • yellow, violet, red, silver
  • orange, violet, red, silver
Q.10

An ohmmeter is an instrument for measuring

  • current
  • voltage
  • resistance
  • wattage
Q.11

A thermistor is a type of

  • switch
  • resistor
  • battery
  • power supply
Q.12

An ohmmeter is an instrument for measuring

  • current
  • voltage
  • resistance
  • wattage
Q.13

A material that does not allow current under normal conditions is a(n)

  • insulator
  • conductor
  • semiconductor
  • valence
Q.14

The current in a given circuit is not to exceedA. Which value of fuse is best?

  • a fuse is not necessary
  • 10 A
  • 24 A
  • 20 A
Q.15

A free electron is a valence electron that has broken away from its parent atom.

  • True
  • False
Q.16

The nominal value of a brown, black, yellow, and gold resistor is 100,ohms.

  • True
  • False
Q.17

Resistance limits the current.

  • True
  • False
Q.18

The unit of electrical charge is the

  • volt
  • ampere
  • joule
  • coulomb
Q.19

An ammeter is connected across the current path.

  • True
  • False
Q.20

Free electrons make current possible.

  • True
  • False
Q.21

Materials with lots of free electrons are called

  • conductors
  • insulators
  • semiconductors
  • filters
Q.22

An open circuit is one that has a complete current path.

  • True
  • False
Q.23

A multimeter measures

  • current
  • voltage
  • resistance
  • current, voltage, and resistance
Q.24

A potentiometer is a two-terminal variable resistor.

  • True
  • False
Q.25

The unit of electrical charge is the

  • coulomb
  • joule
  • volt
  • watt
Q.26

A neutral atom is one with an equal number of protons and electrons.

  • True
  • False
Q.27

If there is 6 A of current through the filament of a lamp, how many coulombs of charge move through the filament in 1.s?

  • 10.5 C
  • 105 C
  • 3.4 C
  • 34 C
Q.28

The atomic number is the number of neutrons in the nucleus.

  • True
  • False
Q.29

Current flows in a circuit when

  • a switch is opened
  • a switch is closed
  • the switch is either open or closed
  • there is no voltage
Q.30

A voltmeter is connected across the current path.

  • True
  • False
0 h : 0 m : 1 s