| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
You would measure the amount of voltage between two points in a circuit with a(n):
ammeter |
|
reostat |
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voltmeter |
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battery |
Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.
An engineer who wants to document an electric circuit would create which of the following?
a matrix |
|
a schematic |
|
a blueprint |
|
a layout |
A schematic is the proper name for a drawing of an electric or electronic circuit.
Which of the following is not a common type of battery?
power-cycle |
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deep-cycle |
|
dry cell |
|
wet cell |
Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery. The three most common types of batteries are dry cell (used in small devices like TV remotes), wet cell (used for cars), and deep-cycle (storage batteries used primarily for backup and emergency power).
The valence shell of n insulator is how full of electrons?
more than half full |
|
empty |
|
less than half full |
|
half full |
Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.
From what energy do photovoltaic cells produce electrical energy?
nuclear |
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chemical |
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magnetic |
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sun |
A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.