| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.75 |
| Score | 0% | 75% |
Which of the following statements about electrical resistance is true?
the more resistive the conductor is the slower electron flow will be |
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electrically conductive materials have no resistive properties |
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the less resistive the conductor is the slower electron flow will be |
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the more resistive the conductor is the faster electron flow will be |
Resistance is opposition to the flow of current. As resistance increases, current decreases as resistance and current are inversely proportional.
This circuit diagram represents a(n):
series circuit |
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parallel circuit |
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series-parallel circuit |
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rectifier |
In a parallel circuit, each load occupies a separate parallel path in the circuit and the input voltage is fully applied to each path. Unlike a series circuit where current (I) is the same at all points in the circuit, in a parallel circuit, voltage (V) is the same across each parallel branch of the circuit but current differs in each branch depending on the load (resistance) present.
Alternating current changes __________ many times each second.
frequency |
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resistance |
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period |
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direction |
In contrast to the constant one-way flow of direct current, alternating current changes direction many times each second. Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances.
You would measure the amount of voltage between two points in a circuit with a(n):
ammeter |
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voltmeter |
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battery |
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reostat |
Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.
The hertz is a unit of measurement for:
inductance |
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energy |
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frequency |
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power |
The hertz is a unit of measurement for frequency.