| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
Using a fuse with a current rating higher than that required by a circuit:
is recommended |
|
makes no difference |
|
is required |
|
makes the circuit less safe |
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.
A transistor to an electronic circuit is like a _______________ to a house?
gate |
|
driveway |
|
safe |
|
no trespassing sign |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor. A transistor acts as a gate or switch for electronic signals.
What is the voltage of most household electrical systems in the United States?
60V |
|
60Hz |
|
220V |
|
110V |
Most households use electricity with a voltage of 110V.
| -2.5 A | |
| 2.75 A | |
| 7 A | |
| 5.5 A |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
Solved for current, I = \( \frac{V}{R} \) = \( \frac{385}{70} \) = 5.5 A
The sum of the voltage drops across each resistor in a __________ circuit will equal the total voltage applied to the circuit.
series-parallel |
|
parallel |
|
closed |
|
series |
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.