| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
The diameter of a number 12 wire is __________ the diameter of a number 6 wire?
double |
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triple |
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more than |
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less 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.
From what energy do photovoltaic cells produce electrical energy?
magnetic |
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nuclear |
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chemical |
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sun |
A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.
| 90V 200A | |
| 9V 200A | |
| 45V 100A | |
| 90V 20A |
Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 90V 20A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yielding a 9V 200A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 45V 100A configuration.
In a series circuit, which of the following is the same across all branches of the circuit?
conductance |
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current |
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voltage |
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resistance |
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:
energy |
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power |
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current |
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inductance |
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.