ASVAB Electronics Information Practice Test 680312 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.29
Score	0%	66%

Review

Which of the following is the same for each branch of a parallel circuit?

57% Answer Correctly

	voltage
	current
	resistance
	power

Solution

In a parallel circuit, each load occupies a separate parallel path in the circuit and the input voltage is fully applied to each path. Unlike a series circuit where current (I) is the same at all points in the circuit, in a parallel circuit, voltage (V) is the same across each parallel branch of the circuit but current differs in each branch depending on the load (resistance) present.

Which of the following statements about electrical resistance is true?

74% Answer Correctly

	the more resistive the conductor is the slower electron flow will be
	electrically conductive materials have no resistive properties
	the less resistive the conductor is the slower electron flow will be
	the more resistive the conductor is the faster electron flow will be

Solution

Resistance is opposition to the flow of current. As resistance increases, current decreases as resistance and current are inversely proportional.

3 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 50 Ω and current is 1.5 amps.

85% Answer Correctly

	78 V
	82.5 V
	75 V
	225 V

Solution

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

V = \( I \times R \) = \( 1.5 \times 50 \) = 75 V

Resistance is opposition to which of the following?

70% Answer Correctly

	voltage
	current
	conductance
	impedance

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.

Which of the following is not true about a line drop?

43% Answer Correctly

	it is caused by resistance
	it is addressed by raising voltage and lowering current across the transmission line
	it is a decrease in voltage between two points on a line
	it is addressed by raising current and lowering voltage across the ransmission line

Solution

Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances. A line drop is a decrease in voltage between two points on an electrical transmission line due to resistance in the line. A lower current and higher voltage across the line will help compensate for the line drop.