ASVAB Electronics Information Practice Test 780316 Results

Your Results Global Average
Questions 5 5
Correct 0 3.72
Score 0% 74%

Review

1

Which of these materials is not a good conductor of electricity?

79% Answer Correctly

air

gold

copper

tin
Solution

All conductors have resistance and the amount of resistance varies with the element. In general, metals make the best conductors of electricity and non-metals make the worst conductors of electricity.

2

What is the frequency of most household electrical systems?

60% Answer Correctly

60MHz

110Hz

110V

60Hz
Solution

Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances. Most households use electricity with a frequency of 60Hz.

3

The conductivity of an element depends on how many electrons occupy which electron shell?

78% Answer Correctly

outer

inner

middle

first
Solution

All electricity is the movement of electrons which are subatomic particles that orbit the nucleus of an atom. Electrons occupy various energy levels called shells and how well an element enables the flow of electrons depends on how many electrons occupy its outer (valence) electron shell.

4

Why does current in an electric circuit create heat?

77% Answer Correctly

the wire in the circuit burns when current passes through

current is naturally hot

heat is created when the current overcomes resistance in the wire

voltage is naturally hot
Solution

Current in an electric circuit creates heat when the current overcomes resistance in the wire.

5

You would measure the amount of resistance at a certain point in a circuit with a(n):

78% Answer Correctly

potentiometer

ammeter

ohmmeter

voltmeter
Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). An ohmmeter is used to measure the amount of resistance at a certain point in a circuit.