| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
| Score | 0% | 65% |
If an electrical circuit is interrupted, which of the following will result?
parallel circuit |
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open circuit |
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closed circuit |
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short circuit |
A closed circuit is a complete loop or path that electricity follows. It consists of a source of voltage, a load, and connective conductors. If the circuit is interrupted, if a wire is disconnected or cut for example, it becomes an open circuit and no electricity will flow.
| 193 V | |
| 191.5 V | |
| 190 V | |
| 63.33 V |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
V = \( I \times R \) = \( 9.5 \times 20 \) = 190 V
The joule is a unit of measurement for:
power |
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energy |
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capacitance |
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resistance |
The joule is a unit of measurement for energy.
The diameter of a number 12 wire is __________ the diameter of a number 6 wire?
more than |
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double |
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less than |
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triple |
The larger the number the smaller the diameter of the wire. So, the diameter of a number 12 wire is less than the diameter of a number 6 wire.
What is the primary difference between a rectifier and an inverter?
a rectifier converts an AC input to DC while an inverter converts a DC input to AC |
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a rectifier strips out the DC portion of electricity while an inverter strips out the AC portion |
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a rectifier strips out the AC portion of electricity while an inverter strips out the DC portion |
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a rectifier converts a DC input to AC while an inverter converts an AC input to DC |
A diode allows current to pass easily in one direction and blocks current in the other direction. Diodes are commonly used for rectification which is the conversion of alternating current (AC) into direct current (DC). Because a diode only allows current flow in one direction, it will pass either the upper or lower half of AC waves (half-wave rectification) creating pulsating DC. Multiple diodes can be connected together to utilize both halves of the AC signal in full-wave rectification.