ASVAB Electronics Information Practice Test 192779 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.49
Score	0%	70%

Review

A solid state device has which of the following characteristics?

53% Answer Correctly

	made from a mix of conductive and insulative material
	made entirely from semiconductor material
	made entirely from insulative material
	made entirely from conductive material

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.

You would measure the amount of current through a circuit with a(n):

69% Answer Correctly

	potentiometer
	ammeter
	battery
	voltmeter

Solution

Current is the rate of flow of electrons per unit time and is measured in amperes (A). An ammeter is used to measure the electric current in a circuit.

What is the voltage of most household electrical systems in the United States?

59% Answer Correctly

	60V
	60Hz
	110V
	220V

Solution

Most households use electricity with a voltage of 110V.

4 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 60 Ω and current is 0.5 amps.

85% Answer Correctly

	15 V
	10 V
	30 V
	31.5 V

Solution

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

V = \( I \times R \) = \( 0.5 \times 60 \) = 30 V

Which of the following can conduct electricity under some conditions but not others?

82% Answer Correctly

	semiconductor
	resistor
	insulator
	conductor

Solution

Semiconductors have valence shells that are exacly half full and can conduct electricity under some conditions but not others. This property makes them useful for the control of electrical current.