| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.50 |
| Score | 0% | 70% |
A diode to an electronic circuit is like a _______________ to a city?
one-way street |
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highway |
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traffic light |
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parking lot |
A diode allows current to pass easily in one direction and blocks current in the other direction.
This circuit component symbol represents a(n):
capacitor |
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diode |
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potentiometer |
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fuse |
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.
Which of the following is a characteristic of batteries connected in series?
total voltage equals the sum of the individual battery voltages |
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total voltage equals the average of the individual battery voltages |
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two connections are made between each adjacent battery |
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the positive terminal of one battery is connected to the positive terminal of the next |
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.
You would measure the amount of current through a circuit with a(n):
battery |
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voltmeter |
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ammeter |
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potentiometer |
Current is the rate of flow of electrons per unit time and is measured in amperes (A). An ammeter is used to measure the electric current in a circuit.
| 40 W | |
| 47 W | |
| 42 W | |
| 80 W |