| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.47 |
| Score | 0% | 69% |
In a series circuit, which of the following is the same across all branches of the circuit?
voltage |
|
conductance |
|
resistance |
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current |
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.
From what energy do photovoltaic cells produce electrical energy?
chemical |
|
nuclear |
|
sun |
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magnetic |
A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.
| 77 V | |
| 76.5 V | |
| 71 V | |
| 75 V |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
V = \( I \times R \) = \( 2.5 \times 30 \) = 75 V
An engineer who wants to document an electric circuit would create which of the following?
a schematic |
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a blueprint |
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a matrix |
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a layout |
A schematic is the proper name for a drawing of an electric or electronic circuit.
Resistance and current are __________ proportional.
exponentially |
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directly |
|
inversely |
|
not |
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.