ASVAB Electronics Information Practice Test 620479 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.66
Score	0%	73%

Review

1 How would you connect 8 [6V 20A] batteries to achieve a combined power output of 24V 80A?

67% Answer Correctly

	orthogonal
	series-parallel
	parallel
	perpendicular

Solution

Connecting the 8 batteries in series multiplies their voltage while keeping their current the same yielding a 48V 20A configuration. Connecting the 8 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 6V 160A configuration. Using a series-parallel connection, 4 batteries can be connected in series and 4 can be connected in parallel resulting in a 24V 80A configuration.

Which of the following allows encapsulating complex circuit designs for easier integration into electronic devices and machines?

67% Answer Correctly

	series circuits
	integrated circuits
	series-parallel circuits
	parallel circuits

Solution

Circuits containing transistors are packaged into integrated circuit chips that allow encapsulating complex circuit designs (CPU, memory, I/O) for easier integration into electronic devices and machines.

In an electrical circuit, resistors have fixed or __________ resistance.

70% Answer Correctly

	variable
	dynamic
	parallel
	series

Solution

Resistors are used to limit voltage and/or current in a circuit and can have a fixed or variable resistance. Variable resistors (often called potentiometers or rheostats) are used when dynamic control over the voltage/current in a circuit is needed, for example, in a light dimmer or volume control.

4 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 30 Ω and current is 2.5 amps.

85% Answer Correctly

	150 V
	75 V
	67.5 V
	112.5 V

Solution

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

V = \( I \times R \) = \( 2.5 \times 30 \) = 75 V

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

77% Answer Correctly

	\(V = {I \over R}\)
	\(V = {R \over I}\)
	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.