| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.60 |
| Score | 0% | 72% |
The formula specifying Ohm's law is which of the following?
V = IR |
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\(V = {R \over I}\) |
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\(V = {I \over R}\) |
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V = I2R |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
The hertz is a unit of measurement for:
energy |
|
inductance |
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power |
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frequency |
The hertz is a unit of measurement for frequency.
The volt is a unit of measurement for:
power |
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voltage |
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current |
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capacitance |
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.
The joule is a unit of measurement for:
power |
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capacitance |
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energy |
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resistance |
The joule is a unit of measurement for energy.
Which of the following is the same for each branch of a parallel circuit?
voltage |
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power |
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resistance |
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current |
In a parallel circuit, each load occupies a separate parallel path in the circuit and the input voltage is fully applied to each path. Unlike a series circuit where current (I) is the same at all points in the circuit, in a parallel circuit, voltage (V) is the same across each parallel branch of the circuit but current differs in each branch depending on the load (resistance) present.