ASVAB Electronics Information Practice Test 774116 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.50
Score	0%	70%

Review

The formula specifying Ohm's law is which of the following?

76% Answer Correctly

	\(V = {R \over I}\)
	\(V = {I \over R}\)
	V = IR
	V = I²R

Solution

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

2 Use Ohm's Law to calculate the value of current in this circuit if voltage is 280 volts and resistance is 40 Ω.

81% Answer Correctly

	7 A
	10.5 A
	10 A
	13 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 = \( \frac{V}{R} \) = \( \frac{280}{40} \) = 7 A

Which of the following is the preferred method for splicing wires?

56% Answer Correctly

	wire crimps
	soldering
	screw-on connectors
	wrap in small gauge wire

Solution

Splicing is permanently joining two wires together. Splicing can be done with screw-on connectors or wire crimps but the preferred method for splicing is soldering. Soldering takes the most effort but results in a connection that is electrically and mechanically identical to the original wire.

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

78% Answer Correctly

	outer
	first
	middle
	inner

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.

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

59% Answer Correctly

	110V
	220V
	60V
	60Hz

Solution

Most households use electricity with a voltage of 110V.