ASVAB Electronics Information Practice Test 749782 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.72
Score	0%	74%

Review

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

68% Answer Correctly

	to convert alternating current into direct current
	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
	as a primary power source

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.

Current is the rate of flow of electrons per unit time and is measured in:

69% Answer Correctly

	volts
	ohms
	amperes
	coulombs

Solution

Current is the rate of flow of electrons per unit time and is measured in amperes (A). A coulomb (C) is the quantity of electricity conveyed in one second by a current of one ampere.

The ohm is a unit of measurement for:

80% Answer Correctly

	energy
	resistance
	power
	capacitance

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.

A diode to an electronic circuit is like a _______________ to a city?

67% Answer Correctly

	one-way street
	parking lot
	traffic light
	highway

Solution

A diode allows current to pass easily in one direction and blocks current in the other direction.

Resistance is measured in:

86% Answer Correctly

	coulombs
	volts
	amperes
	ohms