ASVAB Electronics Information Practice Test 416476 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.69
Score	0%	74%

Review

If an electrical circuit is interrupted, which of the following will result?

61% Answer Correctly

	parallel circuit
	short circuit
	open circuit
	closed circuit

Solution

A closed circuit is a complete loop or path that electricity follows. It consists of a source of voltage, a load, and connective conductors. If the circuit is interrupted, if a wire is disconnected or cut for example, it becomes an open circuit and no electricity will flow.

Silver and gold are among the most highly conductive elements. Why is copper used much more often as a conductor in electrical circuits?

80% Answer Correctly

	all of these
	silver and gold are costly
	silver and gold are brittle
	copper is durable and relatively cheap

Solution

All conductors have resistance and the amount of resistance varies with the element. But, resistance isn't the only consideration when choosing a conductor as the most highly conductive elements like silver and gold are also more expensive and more brittle than slightly less conductive elements like copper. A balance needs to be struck between the electrical qualities of a material and its cost and durability.

This circuit diagram represents a(n):

69% Answer Correctly

	series circuit
	open circuit
	series-parallel circuit
	parallel circuit

Solution

A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.

4 Use Ohm's Law to calculate the value of resistance in this circuit if voltage is 95 volts and current is 9.5 amps.

80% Answer Correctly

	3 Ω
	30 Ω
	10 Ω
	12 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 = \( \frac{V}{I} \) = \( \frac{95}{9.5} \) = 10 Ω

5 Use Ohm's Law to calculate the value of current in this circuit if voltage is 1000 volts and resistance is 100 Ω.

81% Answer Correctly

	20 A
	13 A
	10 A
	12 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 = \( \frac{V}{R} \) = \( \frac{1000}{100} \) = 10 A