Unit 21: Vocabulary

The flash bulb in my camera has an old capacitor and takes a long time to charge up.

You can experience the current flow in a copper wire if you hook one end up to a voltage source.

This electrical circuit is not in a closed loop and that is why the current does not flow to the bulb.

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!

ICs get smaller and smaller ever year due to the rapid development of nanotechnology - today there are billions of transistors inside a typical chip.

I need a larger light bulb in my table lamp - it is too dark for me when I study at night.

LEDs are an increasingly popular source of light in homes nowadays because they consume much less energy than the older style incandescent light bulbs.

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.

We order ready-made PCBs without any components, so our students can practice their soldering skills.

If you add another resistor to your serial connection just before the bulb, the light will not be so blinding.

There is a small solar cell in my watch, thanks to that it was working even after the battery died.

My home soldering iron is really handy but at work we use soldering stations which allow us to control the heating temperature.

If there is a voltage between two points of a circuit, and you connect these points with a wire, then the current will flow.

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.