Title: Unit 4 Test
Course: ELT 102 Basic Electricity & Wiring > Section: ELT 102 Basic Electricity & Wiring

Q: Please select the correct answer for each question.

Electricity is a form of matter.
- True
- False
A: False

Q: Select the correct answer for each question.

A force moving through a distance is defined as
- Energy
- Work
- Electricity
- Base Unit
A: Work

Q: Select the correct answer for each question.

Electric pressure that causes current to flow is
- Charge
- Resistance
- Current
- Voltage
A: Voltage

Q: Select the correct answer for each question.

The symbol for energy is W.
- True
- False
A: True

Q: Select the correct answer for each question.

Materials that offer very little resistance to current are called
- Resistors
- Semiconductors
- Conductors
- Insulators
A: Conductors

Q: Select the correct answer for each question.

The common ground symbol represents a common electric point in an electric circuit, that is a common connecting point for many components.
- True
- False
A: True

Q: Select the correct answer for each question.

The electron has a negative charge.
- True
- False
A: True

Q: Select the correct answer for each question.

The smallest particle of a substance that still has all of its characteristics is called
- an atom
- an electron
- a molecule
- an element
A: a molecule

Q: Select the correct answer for each question.

One coulomb is the charge possessed by 6.25 x 10^16 electrons.
- True
- False
A: False

Q: Select the correct answer for each question.

Energy cannot be created or destroyed.
- True
- False
A: True

Q: Select the correct answer for each question.

Ohm's law states that the current is directly proportional to the voltage and inversely proportional to the resistance.
- True
- False
A: True

Q: Select the correct answer for each question.

The opposition a material offers to current is called
- Voltage
- Resistance
- Current
- Energy
A: Resistance

Q: Select the correct answer for each question.

The electron, proton, and neutron are the three major particles of the atom.
- True
- False
A: True

Q: Select the correct answer for each question.

Meters that are capable of measuring two or more electrical quantities are known as digital meters.
- True
- False
A: False

Q: Select the correct answer for each question.

An electrical measurement that requires a circuit to be physically interrupted is
- Resistance
- Current
- Voltage
- Power
A: Current

Q: Select the correct answer for each question.

What is created when an atom accepts additional electrons?
- positive ions
- negative ions
- free electrons
- static charges
A: negative ions

Q: Select the correct answer for each question.

Current that travels in the same direction all the time is called direct current.
- True
- False
A: True

Q: Select the correct answer for each question.

Ohm's law states
- V = I/R
- R = V * I
- I = V/R
- V = R/I
A: I = V/R

Q: Select the correct answer for each question.

Positive ions are created when an atom accepts additional electrons.
- True
- False
A: False

Q: Select the correct answer for each question.

The base unit of energy is the
- Watt
- Joule
- Volt
- Amp
A: Joule

Q: Select the correct answer for each question.

Materials that offer a high resistance to current are called
- Resistors
- Semiconductors
- Conductors
- Insulators
A: Insulators

Q: Select the correct answer for each question.

DMMs that automatically select the correct range are said to be
- automatic
- full ranging
- range selecting
- auto ranging
A: auto ranging

Q: Select the correct answer for each question.

Percent efficiency equals
- total energy in, divided by useful energy out, times 100
- useful energy out, divided by total energy in, divided by 100
- total energy in, times useful energy out, plus 100
- useful energy out, divided by total energy in, times 100
A: useful energy out, divided by total energy in, times 100

Q: Select the correct answer for each question.

What is the efficiency of a system in which a battery converts 500 joules of chemical energy to provide 100 joules of light energy?
- 5%
- 50%
- 0.2%
- 20%
A: 20%

Q: Select the correct answer for each question.

The electrons in the outermost shell of an atom are called  ___________ electrons.
- Additional
- Automatic
- Resistor
- Valance
A: Valance