ASVAB Electronics Information Practice Test 525260 Results

Your Results Global Average
Questions 5 5
Correct 0 3.54
Score 0% 71%

Review

1 Use Ohm's Law to calculate the value of current in this circuit if voltage is 585 volts and resistance is 90 Ω.
81% Answer Correctly
13 A
8.5 A
5.85 A
6.5 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 = \( \frac{V}{R} \) = \( \frac{585}{90} \) = 6.5 A

2

Silver and gold are among the most highly conductive elements. Why is copper used much more often as a conductor in electrical circuits?

80% Answer Correctly

silver and gold are costly

silver and gold are brittle

all of these

copper is durable and relatively cheap
Solution

All conductors have resistance and the amount of resistance varies with the element.  But, resistance isn't the only consideration when choosing a conductor as the most highly conductive elements like silver and gold are also more expensive and more brittle than slightly less conductive elements like copper. A balance needs to be struck between the electrical qualities of a material and its cost and durability.

3

Which of the following allows encapsulating complex circuit designs for easier integration into electronic devices and machines?

67% Answer Correctly

parallel circuits

series circuits

series-parallel circuits

integrated circuits
Solution

Circuits containing transistors are packaged into integrated circuit chips that allow encapsulating complex circuit designs (CPU, memory, I/O) for easier integration into electronic devices and machines.

4

What kind of diode allows current to flow in the opposite direction once a certain voltage threshold is reached?

50% Answer Correctly

standard diode

light emitting diode

zener diode

v-type diode
Solution

A diode allows current to pass easily in one direction and blocks current in the other direction. A zener diode is a diode which allows current to flow in one direction as normal and will also allow current flow in the reverse direction when the voltage is above a certain value. This value is called the breakdown voltage.

5

Which of the following statements about electrical resistance is true?

75% Answer Correctly

the more resistive the conductor is the faster electron flow will be

the more resistive the conductor is the slower electron flow will be

the less resistive the conductor is the slower electron flow will be

electrically conductive materials have no resistive properties
Solution

Resistance is opposition to the flow of current. As resistance increases, current decreases as resistance and current are inversely proportional.