ASVAB Electronics Information Practice Test 906592 Results

Your Results Global Average
Questions 5 5
Correct 0 3.73
Score 0% 75%

Review

1

Which of the following statements about electrical resistance is true?

74% Answer Correctly

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

electrically conductive materials have no resistive properties

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

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

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

2 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
30 V
32 V
39 V
27 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

3 What's the overall power consumption of a piece of equipment that is rated for 7 amps at 70 volts?
80% Answer Correctly
491.5 W
490 W
493 W
163 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 7 amps (I) at 70 volts (V) so the equation becomes P = \( 70 \times 7 \) = 490 W
4

Electromotive force is another name for:

53% Answer Correctly

current

voltage

power

energy
Solution

Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.

5

The conductivity of an element depends on how many electrons occupy which electron shell?

78% Answer Correctly

middle

outer

inner

first
Solution

All electricity is the movement of electrons which are subatomic particles that orbit the nucleus of an atom. Electrons occupy various energy levels called shells and how well an element enables the flow of electrons depends on how many electrons occupy its outer (valence) electron shell.