| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
A diode to an electronic circuit is like a _______________ to a city?
traffic light |
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highway |
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parking lot |
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one-way street |
A diode allows current to pass easily in one direction and blocks current in the other direction.
This circuit component symbol represents a(n):
AC source |
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capacitor |
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transformer |
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DC source |
Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.
Which of the following is not a characteristic of a step-up transformer?
the secondary voltage is higher than the primary voltage |
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increases voltage |
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the primary voltage is higher than the secondary voltage |
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has more turns in the secondary winding than in the primary winding |
As their names indicate, a step-up transformer is used to step up or increase voltage and a step-down transformer is used to step down or decrease voltage. In a step-up transformer, the secondary voltage is higher than the primary voltage and it has more turns in the secondary winding than in the primary winding.
Voltage and current are __________ proportional.
not |
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directly |
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inversely |
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indirectly |
Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.
| 58 W | |
| 63 W | |
| 61.5 W | |
| 60 W |