ASVAB Electronics Information Practice Test 335250 Results

Your Results Global Average
Questions 5 5
Correct 0 3.51
Score 0% 70%

Review

1 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 20 Ω and current is 8.5 amps.
85% Answer Correctly
187 V
510 V
170 V
171.5 V
Solution

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

V = \( I \times R \) = \( 8.5 \times 20 \) = 170 V

2

This circuit component symbol represents a(n):

65% Answer Correctly

transistor

AC source

DC source

transformer
Solution

In contrast to the constant one-way flow of direct current, alternating current changes direction many times each second. Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances.

3

Current is the rate of flow of electrons per unit time and is measured in:

69% Answer Correctly

volts

ohms

coulombs

amperes
Solution

Current is the rate of flow of electrons per unit time and is measured in amperes (A). A coulomb (C) is the quantity of electricity conveyed in one second by a current of one ampere.

4

The rate of flow of electrons per unit time is which of the following?

74% Answer Correctly

conductance

resistance

voltage

current
Solution

Current is the rate of flow of electrons per unit time and is measured in amperes (A). A coulomb (C) is the quantity of electricity conveyed in one second by a current of one ampere.

5

What is the frequency of most household electrical systems?

59% Answer Correctly

60Hz

110Hz

60MHz

110V
Solution

Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances. Most households use electricity with a frequency of 60Hz.