ASVAB Electronics Information Practice Test 400936 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.51
Score	0%	70%

Review

Resistance and current are __________ proportional.

68% Answer Correctly

	not
	directly
	inversely
	exponentially

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.

This circuit component symbol represents a(n):

57% Answer Correctly

	capacitor
	transformer
	AC source
	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.

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

83% Answer Correctly

	voltmeter
	battery
	reostat
	ammeter

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.

4 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 100 Ω and current is 2 amps.

85% Answer Correctly

	199 V
	400 V
	200 V
	600 V

Solution

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

V = \( I \times R \) = \( 2 \times 100 \) = 200 V

The electrical potential difference between two points is called:

60% Answer Correctly

	conductance
	resistance
	current
	voltage

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.