ASVAB Electronics Information Practice Test 7402 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.29
Score	0%	66%

Review

In a series circuit, which of the following is the same across all branches of the circuit?

61% Answer Correctly

	conductance
	current
	voltage
	resistance

Solution

A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.

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
	electrons flow in only one consistent direction
	an example power source is a generator

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.

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

83% Answer Correctly

	voltmeter
	reostat
	battery
	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.

Electrons will flow as current from areas of __________ potential (concentration of electrons) to areas of __________ potential.

74% Answer Correctly

	high, high
	low, high
	low, low
	high, low

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.

Direct current flows from the __________ terminal of the voltage source to the __________ terminal.

62% Answer Correctly

	negative, positive
	positive, positive
	negative, negative
	positive, negative

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.