| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.28 |
| Score | 0% | 66% |
The formula specifying Ohm's law is which of the following?
\(V = {I \over R}\) |
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\(V = {R \over I}\) |
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V = I2R |
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V = IR |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
Which of the following is not a terminal on a transistor?
base |
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emitter |
|
collector |
|
input |
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.
This circuit component symbol represents a(n):
transistor |
|
diode |
|
inductor |
|
transformer |
The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. 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.
| 72V 200A | |
| 36V 25A | |
| 18V 50A | |
| 9V 100A |
Connecting the 4 batteries in series multiplies their voltage while keeping their current the same yielding a 36V 25A configuration. Connecting the 4 batteries in parallel multiplies their current while keeping their voltage the same yielding a 9V 100A configuration. Using a series-parallel connection, 2 batteries can be connected in series and 2 can be connected in parallel resulting in a 18V 50A configuration.
You would measure the amount of resistance at a certain point in a circuit with a(n):
voltmeter |
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ohmmeter |
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potentiometer |
|
ammeter |
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.