ASVAB Electronics Information Practice Test 741536 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.57
Score	0%	71%

Review

1 Use Ohm's Law to calculate the value of current in this circuit if voltage is 150 volts and resistance is 50 Ω.

81% Answer Correctly

	4.5 A
	3 A
	4 A
	1 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 = \( \frac{V}{R} \) = \( \frac{150}{50} \) = 3 A

What is the voltage of most household electrical systems in the United States?

59% Answer Correctly

	60V
	220V
	110V
	60Hz

Solution

Most households use electricity with a voltage of 110V.

Electricity cannot flow...

72% Answer Correctly

	through an open circuit
	through a circuit under load
	through a circuit with resistance
	through a closed circuit

Solution

An electrical circuit is a path through which electricity flows. This path contains one or more components that create a load (something that is using electricity) and that load acts as resistance to the passage of electricity through the circuit. Electricity can only flow through a circuit when the path is closed and cannot flow through an open circuit.

You would measure the amount of current through a circuit with a(n):

68% Answer Correctly

	battery
	ammeter
	voltmeter
	potentiometer

Solution

Current is the rate of flow of electrons per unit time and is measured in amperes (A). An ammeter is used to measure the electric current in a circuit.

You would measure the amount of resistance at a certain point in a circuit with a(n):

78% Answer Correctly

	potentiometer
	ohmmeter
	ammeter
	voltmeter

Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). An ohmmeter is used to measure the amount of resistance at a certain point in a circuit.