ASVAB Electronics Information Practice Test 36294 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.09
Score	0%	62%

Review

1 Use Ohm's Law to calculate the value of current in this circuit if voltage is 550 volts and resistance is 100 Ω.

81% Answer Correctly

	12.5 A
	5.5 A
	4.95 A
	6.05 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 = \( \frac{V}{R} \) = \( \frac{550}{100} \) = 5.5 A

Longer the electrical wires mean _______________ voltage drop.

73% Answer Correctly

	lesser
	diminishing
	greater
	complete

Solution

Electrical wires have a certain amount of resistance per foot. A longer wire means more resistance and a greater voltage drop.

This circuit component symbol represents a(n):

57% Answer Correctly

	capacitor
	AC source
	transformer
	DC source

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.

Which of the following is not a characteristic of direct current?

48% Answer Correctly

	used to power your cell phone
	cannot easily travel distances without power loss
	an example power source is a generator
	electrons flow in only one consistent direction

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 DC is a battery. In contrast to the constant one-way flow of direct current, alternating current changes direction many times each second. Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances.

The valence shell of a conductor is how full of electrons?

52% Answer Correctly

	half full
	more than half full
	full
	less than half full

Solution

Conductors are elements that allow electrons to flow freely. Their valence shell is less than half full of electrons that are able to move easily from one atom to another.