| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.40 |
| Score | 0% | 68% |
Using a fuse with a current rating higher than that required by a circuit:
makes the circuit less safe |
|
makes no difference |
|
is required |
|
is recommended |
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 diode to an electronic circuit is like a _______________ to a city?
traffic light |
|
highway |
|
parking lot |
|
one-way street |
A diode allows current to pass easily in one direction and blocks current in the other direction.
The formula specifying Ohm's law is which of the following?
\(V = {I \over R}\) |
|
V = IR |
|
V = I2R |
|
\(V = {R \over I}\) |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
| 12V 250A | |
| 10V 300A | |
| 120V 25A | |
| 60V 125A |
Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 120V 25A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yielding a 12V 250A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 60V 125A configuration.
| 6 Ω | |
| 20 Ω | |
| 21.5 Ω | |
| 18 Ω |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
Solved for resistance, R = \( \frac{V}{I} \) = \( \frac{140}{7} \) = 20 Ω