ASVAB Electronics Information Practice Test 311911 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.27
Score	0%	65%

Review

You would measure the amount of voltage between two points in a circuit with a(n):

83% Answer Correctly

	battery
	voltmeter
	ammeter
	reostat

Solution

Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.

2 How would you connect 10 [9V 15A] batteries to achieve a combined power output of 9V 150A?

51% Answer Correctly

	parallel
	series-parallel
	orthogonal
	perpendicular

Solution

Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 90V 15A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 9V 150A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 45V 75A configuration.

The valence shell of a conductor is how full of electrons?

52% Answer Correctly

	more than half full
	half full
	less than half full
	full

Solution

Conductors are elements that allow electrons to flow freely. Their valence shell is less than half full of electrons that are able to move easily from one atom to another.

4 Use Ohm's Law to calculate the value of current in this circuit if voltage is 150 volts and resistance is 60 Ω.

82% Answer Correctly

	2.75 A
	2.5 A
	7.5 A
	2.25 A

Solution

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

Solved for current, I = \( \frac{V}{R} \) = \( \frac{150}{60} \) = 2.5 A

Which of the following is not a terminal on a transistor?

59% Answer Correctly

	input
	collector
	base
	emitter

Solution

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.