ASVAB Electronics Information Practice Test 782596 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.15
Score	0%	63%

Review

This circuit component symbol represents a(n):

57% Answer Correctly

	AC source
	transformer
	capacitor
	DC source

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

Voltage and current are __________ proportional.

66% Answer Correctly

	directly
	not
	indirectly
	inversely

Solution

Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.

This circuit component symbol represents a(n):

55% Answer Correctly

	inductor
	potentiometer
	transformer
	fuse

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.

The volt is a unit of measurement for:

79% Answer Correctly

	current
	capacitance
	power
	voltage

Solution

The valence shell of n insulator is how full of electrons?

56% Answer Correctly

	more than half full
	less than half full
	half full
	empty

Solution

Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.