Please study the 14 vocabulary terms below. Then press the Mark Complete button to continue.
- capacitor
- an electrical component which uses electrostatics to store energy
- current
- a flow of electric charge (such as electrons or ions)
- electrical circuit
- a network or interconnection of electric components in a closed loop
- EMF (electromotive force)
- an energy measured in volts; refers to the potential which causes the flow of electrons (and ions) in a conducto
- IC (integrated circuit)
- a set of electronic interconnections in a small "chip" or plate where all the elements are inseparable
- light bulb
- a source of electric light which uses a filament stored in a glass enclosure
- LED (light-emitting diode)
- a semiconductor source of light
- path
- a continuous trace or wire in electric circuit which connects various components
- PCB (printed circuit board)
- a laminate board which supports electric components in the circuit
- resistor
- an electrical component, which restricts the flow of electrons in the circuit
- solar cell
- an electrical device which converts the energy from light into electricity
- soldering iron
- a handy tool used to assemble the electrical components on a PCB (printed circuit board)
- voltage
- also known as "electric tension", is a difference between electric potential between two points
- voltaic cell
- a device that derives energy from chemical reaction, such as in a battery
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The flash bulb in my camera has an old capacitor and takes a long time to charge up.
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You can experience the current flow in a copper wire if you hook one end up to a voltage source.
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This electrical circuit is not in a closed loop and that is why the current does not flow to the bulb.
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A simple battery is the most common source of electromotive force in electronic toys, but some modern toys even use solar cells to power up!
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ICs get smaller and smaller ever year due to the rapid development of nanotechnology - today there are billions of transistors inside a typical chip.
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I need a larger light bulb in my table lamp - it is too dark for me when I study at night.
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LEDs are an increasingly popular source of light in homes nowadays because they consume much less energy than the older style incandescent light bulbs.
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After a long investigation I found a break in the path which connected the bulb and the battery - that is why the circuit didn't work.
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We order ready-made PCBs without any components, so our students can practice their soldering skills.
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If you add another resistor to your serial connection just before the bulb, the light will not be so blinding.
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There is a small solar cell in my watch, thanks to that it was working even after the battery died.
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My home soldering iron is really handy but at work we use soldering stations which allow us to control the heating temperature.
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If there is a voltage between two points of a circuit, and you connect these points with a wire, then the current will flow.
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Car batteries are a good example of voltaic cells: there are electrodes which are submerged in a solution, and due to some chemical reaction which takes place in the solution, the energy is derived.