ASVAB Electronics Information Practice Test 90378 Results

Your Results Global Average
Questions 5 5
Correct 0 3.68
Score 0% 74%

Review

1 Use Ohm's Law to calculate the value of resistance in this circuit if voltage is 60 volts and current is 1.5 amps.
80% Answer Correctly
36 Ω
13 Ω
80 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 = \( \frac{V}{I} \) = \( \frac{60}{1.5} \) = 40 Ω

2

Resistance is opposition to which of the following?

70% Answer Correctly

voltage

conductance

current

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.

3

The ohm is a unit of measurement for:

81% Answer Correctly

capacitance

energy

resistance

power
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.

4

Resistance and current are __________ proportional.

68% Answer Correctly

directly

not

exponentially

inversely
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.

5

Using a fuse with a current rating higher than that required by a circuit:

70% Answer Correctly

makes the circuit less safe

is recommended

is required

makes no difference
Solution

A fuse is a type of low resistance resistor that stops current flow in a circuit in response to a larger than intended electric current flow. Using a fuse with a higher current rating than required by a circuit is less safe as it could potentially allow overcurrent and risk a fire or heat-related equipment damage.