ASVAB Electronics Information Practice Test 914582 Results

Your Results Global Average
Questions 5 5
Correct 0 3.90
Score 0% 78%

Review

1

The ohm is a unit of measurement for:

81% Answer Correctly

capacitance

energy

resistance

power
Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.

2

What type of current flows in only one direction in a circuit?

82% Answer Correctly

series

direct

alternating

parallel
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.

3

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

82% Answer Correctly

resistor

insulator

conductor

semiconductor
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.

4

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

83% Answer Correctly

voltmeter

reostat

ammeter

battery
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.

5

Direct current flows from the __________ terminal of the voltage source to the __________ terminal.

62% Answer Correctly

negative, negative

positive, negative

positive, positive

negative, positive
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.