| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.59 |
| Score | 0% | 72% |
The most common circuit configuration is:
household |
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series-parallel |
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parallel |
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series |
Circuits are not limited to only series or only parallel configurations. Most circuits contain a mix of series and parallel segments. A good example is a household circuit breaker. Electrical outlets in each section of the house are wired in parallel with the circuit breaker for that section wired in series making it easy to cut off electricity to the parallel parts of the circuit when needed.
| 140 W | |
| 420 W | |
| 423 W | |
| 425 W |
Which of the following is a difference between a circuit breaker and a fuse?
a circuit breaker can be reused |
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all of these |
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a fuse responds more quickly than a circuit breaker |
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a fuse is cheaper than a circuit breaker |
Like fuses, circuit breakers stop current flow once it reaches a certain amount. They have the advantage of being reusable (fuses must be replaced when "blown") but respond more slowly to current surges and are more expensive than fuses.
The sum of the voltage drops across each resistor in a __________ circuit will equal the total voltage applied to the circuit.
series-parallel |
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series |
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parallel |
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closed |
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.
Longer the electrical wires mean _______________ voltage drop.
diminishing |
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lesser |
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greater |
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complete |
Electrical wires have a certain amount of resistance per foot. A longer wire means more resistance and a greater voltage drop.