| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.81 |
| Score | 0% | 76% |
The joule is a unit of measurement for:
power |
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energy |
|
resistance |
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capacitance |
The joule is a unit of measurement for energy.
Resistance is measured in:
coulombs |
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amperes |
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volts |
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ohms |
Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.
You would measure the amount of resistance at a certain point in a circuit with a(n):
potentiometer |
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ohmmeter |
|
voltmeter |
|
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.
From what energy do photovoltaic cells produce electrical energy?
nuclear |
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sun |
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chemical |
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magnetic |
A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.
The hertz is a unit of measurement for:
frequency |
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power |
|
energy |
|
inductance |
The hertz is a unit of measurement for frequency.