ASVAB Electronics Information Practice Test 843466 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.43
Score	0%	69%

Review

1 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 50 Ω and current is 3.5 amps.

85% Answer Correctly

	192.5 V
	178 V
	58.33 V
	175 V

Solution

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

V = \( I \times R \) = \( 3.5 \times 50 \) = 175 V

This circuit component symbol represents a(n):

65% Answer Correctly

	transformer
	AC source
	transistor
	DC source

Solution

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.

Which of the following is a characteristic of batteries connected in series?

62% Answer Correctly

	two connections are made between each adjacent battery
	total voltage equals the average of the individual battery voltages
	the positive terminal of one battery is connected to the positive terminal of the next
	total voltage equals the sum of the individual battery voltages

Solution

You can multiply the voltage or the current supplied by individual batteries by connecting them together either in series or in parallel. The characteristics of batteries connected in series are that total voltage equals the sum of the individual battery voltages, total current equals the average of the individual battery currents, the positive terminal of one battery is connected to the negative terminal of the next, and one connection is made between each adjacent battery.

A capacitor is often used for which of the following purposes?

68% Answer Correctly

	to convert alternating current into direct current
	as a primary power source
	to allow a small amount of current to control a large amount of current
	to maintain power in a circuit when the primary power source is disconnected

Solution

Capacitors store electricity and are used in circuits as temporary batteries. Capacitors are charged by DC current (AC current passes through a capacitor) and that stored charge can later be dissipated into the circuit as needed. Capacitors are often used to maintain power within a system when it is disconnected from its primary power source or to smooth out or filter voltage within a circuit.

The farad is a unit of measurement for:

63% Answer Correctly

	energy
	power
	capacitance
	inductance