| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
The diameter of a number 12 wire is __________ the diameter of a number 6 wire?
less than |
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double |
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triple |
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more than |
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.
This circuit diagram represents a(n):
open circuit |
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parallel circuit |
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series circuit |
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series-parallel circuit |
A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.
The ampere is a unit of measurement for:
power |
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inductance |
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current |
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energy |
Current is the rate of flow of electrons per unit time and is measured in amperes (A). A coulomb (C) is the quantity of electricity conveyed in one second by a current of one ampere.
What kind of diode allows current to flow in the opposite direction once a certain voltage threshold is reached?
standard diode |
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light emitting diode |
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v-type diode |
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zener diode |
A diode allows current to pass easily in one direction and blocks current in the other direction. A zener diode is a diode which allows current to flow in one direction as normal and will also allow current flow in the reverse direction when the voltage is above a certain value. This value is called the breakdown voltage.
From what energy do photovoltaic cells produce electrical energy?
chemical |
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nuclear |
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sun |
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magnetic |
A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.