ASVAB Electronics Information Practice Test 594716 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.34
Score	0%	67%

Review

This circuit component symbol represents a(n):

57% Answer Correctly

	capacitor
	AC source
	DC source
	transformer

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.

Longer the electrical wires mean _______________ voltage drop.

73% Answer Correctly

	greater
	lesser
	diminishing
	complete

Solution

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

Why is an insulator a poor conductor of electricity?

68% Answer Correctly

	an insulator is made of inorganic material
	an insulator has many free electrons
	an insulator is made of organic material
	an insulator has few free electrons

Solution

Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.

4 Use Ohm's Law to calculate the value of current in this circuit if voltage is 260 volts and resistance is 40 Ω.

81% Answer Correctly

	3.25 A
	7.15 A
	6.5 A
	2.17 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 = \( \frac{V}{R} \) = \( \frac{260}{40} \) = 6.5 A

Which of the following is the same for each branch of a parallel circuit?

57% Answer Correctly

	voltage
	resistance
	current
	power

Solution

In a parallel circuit, each load occupies a separate parallel path in the circuit and the input voltage is fully applied to each path. Unlike a series circuit where current (I) is the same at all points in the circuit, in a parallel circuit, voltage (V) is the same across each parallel branch of the circuit but current differs in each branch depending on the load (resistance) present.