| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.97 |
| Score | 0% | 59% |
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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parallel |
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closed |
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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.
What is the voltage of most household electrical systems in the United States?
60V |
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110V |
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60Hz |
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220V |
Most households use electricity with a voltage of 110V.
An engineer who wants to document an electric circuit would create which of the following?
a matrix |
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a blueprint |
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a schematic |
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a layout |
A schematic is the proper name for a drawing of an electric or electronic circuit.
Capacitors store:
electricity |
|
capacitance |
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resistance |
|
current |
Capacitors store electricity and are used in circuits as temporary batteries. Capacitors are charged by DC current (AC current passes through a capacitor) and that stored charge can later be dissipated into the circuit as needed. Capacitors are often used to maintain power within a system when it is disconnected from its primary power source or to smooth out or filter voltage within a circuit.
In metals, increasing the temperature typically _____________ conductivity.
increases |
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decreases |
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does nothing to |
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eliminates |
All conductors have resistance and the amount of resistance varies with the element. Metals exhibit increased resistance (and, therefore, lower conductivity) as their temperature increases.