Odpowiedź:
1 Resistors, which can be used to reduce the current in a circuit, are sometimes made of a length of nichrome wire.
2 Potentiometers, which are used in radios as volume controls and tone controls, are often circular.
3 The more current flows, the hotter the thermistor gets. albo z 0 trybu warunkowego When more current flows, the thermistor gets hotter.
4 If lamp is marked 60 W, this means it is converting electricity to heat and light at the rate of 60 joules per second.
5 X-rays, which were discovered by Röntgen in 1895, can be used in industry to inspect metal castings.
6 Radios and computers could be damaged if the power supply is connected the wrong way round.
7 Special diodes called LEDs give out light if current passes through them.
8 LEDs, which are often used as indicator lamps, are small, reliable, and need only a small current.
9 When light shines on a semiconductor, it conducts electricity more easily.
10 A reed switch, which is often used in electronic circuit, consist a glass tube with two iron reeds in it.
