| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
Which of the following is a characteristic of batteries connected in series?
total voltage equals the average of the individual battery voltages |
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the positive terminal of one battery is connected to the positive terminal of the next |
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two connections are made between each adjacent battery |
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total voltage equals the sum of the individual battery voltages |
You can multiply the voltage or the current supplied by individual batteries by connecting them together either in series or in parallel. The characteristics of batteries connected in series are that total voltage equals the sum of the individual battery voltages, total current equals the average of the individual battery currents, the positive terminal of one battery is connected to the negative terminal of the next, and one connection is made between each adjacent battery.
Silver and gold are among the most highly conductive elements. Why is copper used much more often as a conductor in electrical circuits?
silver and gold are costly |
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all of these |
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copper is durable and relatively cheap |
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silver and gold are brittle |
All conductors have resistance and the amount of resistance varies with the element. But, resistance isn't the only consideration when choosing a conductor as the most highly conductive elements like silver and gold are also more expensive and more brittle than slightly less conductive elements like copper. A balance needs to be struck between the electrical qualities of a material and its cost and durability.
An engineer who wants to document an electric circuit would create which of the following?
a schematic |
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a blueprint |
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a layout |
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a matrix |
A schematic is the proper name for a drawing of an electric or electronic circuit.
This circuit component symbol represents a(n):
potentiometer |
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fuse |
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diode |
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capacitor |
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.
A capacitor to an electronic circuit is like a _______________ to a house?
storage shed |
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driveway |
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safe |
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gate |
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.