| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
Longer the electrical wires mean _______________ voltage drop.
diminishing |
|
greater |
|
lesser |
|
complete |
Electrical wires have a certain amount of resistance per foot. A longer wire means more resistance and a greater voltage drop.
Inductance is a factor in which of the following?
a DC circuit |
|
determining energy stored by a capacitor |
|
batteries connected in serial |
|
an AC circuit |
Inductance is a property of an AC circuit (or a component in an AC circuit) that quantifies resistance to changes in current. The current in an AC circuit is continuously changing and inductive reactance (the opposition to change) depends both on the inductance of the circuit or component and the rate at which the current is changing.
The hertz is a unit of measurement for:
inductance |
|
frequency |
|
energy |
|
power |
The hertz is a unit of measurement for frequency.
The sum of the voltage drops across each resistor in a __________ circuit will equal the total voltage applied to the circuit.
series |
|
series-parallel |
|
closed |
|
parallel |
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.
In household electrical wiring, which color of insulation indicates the 'hot' wire?
red |
|
green |
|
white |
|
black |
In the NM cable used for wiring homes, each cable has three wires inside a sheath with each wire covered in a different color of insulation to indicate its type. The wire with the black insulation is the 'hot' wire, white is the neutral wire, and the ground wire is either covered in green insulation or left bare.