ASVAB Electronics Information Practice Test 165716 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.83
Score	0%	77%

Review

Electricity cannot flow...

72% Answer Correctly

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

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.

2 Use Ohm's Law to calculate the value of current in this circuit if voltage is 70 volts and resistance is 20 Ω.

82% Answer Correctly

	3.5 A
	3.15 A
	10.5 A
	5.5 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 = \( \frac{V}{R} \) = \( \frac{70}{20} \) = 3.5 A

3 Use Ohm's Law to calculate the value of resistance in this circuit if voltage is 120 volts and current is 3 amps.

81% Answer Correctly

	120 Ω
	36 Ω
	20 Ω
	40 Ω

Solution

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

Solved for resistance, R = \( \frac{V}{I} \) = \( \frac{120}{3} \) = 40 Ω

An engineer who wants to document an electric circuit would create which of the following?

67% Answer Correctly

	a matrix
	a layout
	a blueprint
	a schematic

Solution

A schematic is the proper name for a drawing of an electric or electronic circuit.

Which of the following can conduct electricity under some conditions but not others?

82% Answer Correctly

	resistor
	semiconductor
	conductor
	insulator

Solution

Semiconductors have valence shells that are exacly half full and can conduct electricity under some conditions but not others. This property makes them useful for the control of electrical current.