Q.1

A voltmeter is used:

  • to measure current
  • in series with the circuit
  • in parallel with the circuit
  • to measure coulombs
Q.2

Which unit of charge contains 6.25 × 1018 electrons?

  • An ampere
  • A coulomb
  • A volt
  • A joule
Q.3

Which resistive component is designed to be temperature sensitive?

  • Thermistor
  • Rheostat
  • Potentiometer
  • Photoconductive cell
Q.4

The symbol that represents electrical charge is Q.

  • True
  • False
Q.5

All conductors have some resistance.

  • True
  • False
Q.6

A conductor will not carry current.

  • True
  • False
Q.7

Switches are used to open and close paths for current.

  • True
  • False
Q.8

Carbon is a semiconductor.

  • True
  • False
Q.9

An electron is the smallest subatomic particle of negative charge that orbits the nucleus of the atom.

  • True
  • False
Q.10

The ___ represents a negative charge in an atom.

  • electron
  • proton
  • neutron
  • None of the above
Q.11

The charge of one coulomb is equal to:

  • 6.24 x 10−18 electrons
  • one ampere
  • one second
  • 6.24 x 1018 electrons
Q.12

Switches are either on or off, but can have multiple poles.

  • True
  • False
Q.13

Material that consists of a mixture of elements is considered to be:

  • an element
  • an ion
  • a compound
  • a molecule
Q.14

An example of potential energy is:

  • tea-kettle steam
  • a moving vehicle
  • the sun
  • a battery
Q.15

What are the basic building blocks that all matter is composed of?

  • electrons, neutrons, and protons
  • two protons for each neutron
  • two protons for each electron
  • electrons, neutrons, and charged ions
Q.16

A short circuit will have:

  • a small current flow
  • a large current flow
  • no current flow
  • some current flow
Q.17

If the current in a circuit equals 0 A, it is likely that the

  • voltage is too high
  • resistance is too low
  • circuit has a short
  • circuit is open
Q.18

A switch is a device that:

  • short circuits complex circuits
  • holds a fuse
  • has double poles
  • opens or completes a current path
Q.19

The unit for resistance is the ___ and the symbol for resistance is ___.

  • ampere, R
  • ohm, R
  • volt, Q
  • ohm, J
Q.20

Resistance is the pressure that causes current to flow.

  • True
  • False
0 h : 0 m : 1 s