| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
Resistance is opposition to which of the following?
voltage |
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conductance |
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current |
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impedance |
Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.
| parallel | |
| series | |
| series-parallel | |
| perpendicular |
Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 60V 20A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 6V 200A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 30V 100A configuration.
A capacitor to an electronic circuit is like a _______________ to a house?
gate |
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safe |
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driveway |
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storage shed |
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?
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 |
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total voltage equals the average of the individual battery voltages |
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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.
You would measure the amount of resistance at a certain point in a circuit with a(n):
ammeter |
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potentiometer |
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ohmmeter |
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voltmeter |
Resistance is opposition to the flow of current and is measured in ohms (Ω). An ohmmeter is used to measure the amount of resistance at a certain point in a circuit.