ASVAB Electronics Information Practice Test 165114 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.55
Score	0%	71%

Review

The formula specifying Ohm's law is which of the following?

77% Answer Correctly

	\(V = {I \over R}\)
	V = IR
	\(V = {R \over I}\)
	V = I²R

Solution

Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.

One of the lights on your Christmas tree burns out and this causes the rest of the lights connected to that strand to go dark. How are the lights in that strand connected?

74% Answer Correctly

	series
	series-parallel
	perpendicular
	parallel

Solution

Lights connected in series form a chain with each light connecting to adjacent lights via one wire. Therefore, if one of the lights burns out and breaks the series, none of the other lights will receive power and they'll go dark. Lights connected in parallel each connect to the positive and negative nodes of the power source and would not go dark if one of their neighbors burnt out.

3 What's the overall power consumption of a piece of equipment that is rated for 2 amps at 110 volts?

80% Answer Correctly

	73 W
	220 W
	221.5 W
	110 W

Solution

Power is measured in watts (W) and 1 watt equals 1 ampere multiplied by 1 volt: P = \( V \times I \). For this problem, the equipment is rated for 2 amps (I) at 110 volts (V) so the equation becomes P = \( 110 \times 2 \) = 220 W

The joule is a unit of measurement for:

67% Answer Correctly

	energy
	resistance
	power
	capacitance

Solution

The joule is a unit of measurement for energy.

General current flow in a transistor is from __________ to __________.

51% Answer Correctly

	collector, emitter
	collector, base
	base, collector
	base, emitter

Solution

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.