ASVAB Electronics Information Practice Test 362971 Results

Your Results Global Average
Questions 5 5
Correct 0 3.59
Score 0% 72%

Review

1

In an electrical circuit, resistors have fixed or __________ resistance.

69% Answer Correctly

dynamic

parallel

variable

series
Solution

Resistors are used to limit voltage and/or current in a circuit and can have a fixed or variable resistance.  Variable resistors (often called potentiometers or rheostats) are used when dynamic control over the voltage/current in a circuit is needed, for example, in a light dimmer or volume control.

2

All electricity is the movement of which subatomic particles?

89% Answer Correctly

neutrons

electrons

protons

nuclei
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.

3

This circuit component symbol represents a(n):

55% Answer Correctly

inductor

fuse

potentiometer

transformer
Solution

Resistors are used to limit voltage and/or current in a circuit and can have a fixed or variable resistance.  Variable resistors (often called potentiometers or rheostats) are used when dynamic control over the voltage/current in a circuit is needed, for example, in a light dimmer or volume control.

4

Which of the following is not a purpose of a resistor in an electrical circuit?

70% Answer Correctly

limit the current in the circuit

multiply the current in the circuit

control the voltage in the circuit

moderate the heat in the circuit
Solution

Resistors can be chosen in a wide variety of values to control the voltage in a circuit, limit the current, or moderate the heat produced by the components in the circuit.

5

Which of the following statements about electrical resistance is true?

74% Answer Correctly

the more resistive the conductor is the slower electron flow will be

the more resistive the conductor is the faster electron flow will be

electrically conductive materials have no resistive properties

the less resistive the conductor is the slower electron flow will be
Solution

Resistance is opposition to the flow of current. As resistance increases, current decreases as resistance and current are inversely proportional.