ASVAB Electronics Information Practice Test 37023 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.70
Score	0%	74%

Review

1 A circuit with a 120-volt power supply is protected by a 25-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	3002 W
	3000 W
	3300 W
	1500 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 25A circuit breaker would allow is 120V x 25A = 3000 W.

Which of the following is not a purpose of a resistor in an electrical circuit?

70% Answer Correctly

	moderate the heat in the circuit
	limit the current in the circuit
	multiply the current in the circuit
	control the voltage in the circuit

Solution

Resistors can be chosen in a wide variety of values to control the voltage in a circuit, limit the current, or moderate the heat produced by the components in the circuit.

The joule is a unit of measurement for:

67% Answer Correctly

	power
	energy
	capacitance
	resistance

Solution

The joule is a unit of measurement for energy.

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

83% Answer Correctly

	ammeter
	voltmeter
	battery
	reostat

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.

A capacitor to an electronic circuit is like a _______________ to a house?

66% Answer Correctly

	gate
	safe
	driveway
	storage shed

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.