| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
Which of the following converts electrical energy into another form of energy in an electrical circuit?
load |
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DC source |
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AC source |
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wiring |
A load is a source of resistance that converts electrical energy into another form of energy. The components of a microwave, for example, are loads that work together to convert household electricity into radation that can be used to quickly cook food.
| 7.5 A | |
| 5.5 A | |
| 12.5 A | |
| 9 A |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
Solved for current, I = \( \frac{V}{R} \) = \( \frac{150}{20} \) = 7.5 A
Which of the following is a characteristic of batteries connected in parallel?
total current equals the average of the individual battery currents |
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the positive terminal of one battery is connected to the negative terminal of the next |
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one connection is made between each adjacent battery |
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total current equals the sum of the individual battery currents |
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 parallel are that total voltage equals the average of the individual battery voltages, total current equals the sum of the individual battery currents, the positive terminal of one battery is connected to the positive terminal of the next, the negative terminal of one battery is connected to the negative terminal of the next, and two connections are made between each adjacent battery.
The formula specifying Ohm's law is which of the following?
\(V = {I \over R}\) |
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V = IR |
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V = I2R |
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\(V = {R \over I}\) |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
A transistor to an electronic circuit is like a _______________ to a house?
safe |
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no trespassing sign |
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gate |
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driveway |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor. A transistor acts as a gate or switch for electronic signals.