1. Made from a variety of materials, such as carbon, this inhibits the flow of current.

• RESISTOR

• CAPACITOR

• INDUCTOR

• RELAY

2. 2. This consists of two plates separated by a dielectric and can store a charge. Useful in tuning and filtering circuits, it blocks DC while passing AC.

• RESISTOR

• CAPACITOR

• INDUCTOR

• DIOD

Answer explanation

3. 3. This can consist of a simple wire wound into a helix. It developes a magnetic field when current passes through it. It is also used in tuning circuits and filters. This one passes DC and blocks AC.

• RESISTOR

• CAPACITOR

• INDUCTOR

• DIODE

5. 5. This is a type of semiconductor that only allows current to flow in one direction. It is usually used to rectify AC signals (conversion to DC).

• RESISTOR

• CAPACITOR

• INDUCTOR

• DIODE

5. 5. This consists of an electromagnet, which is used to open or close a contact(s). It is used in switching that requires isolation or high power.
   

• RELAY

• TRANSISTOR

• TRANSFORMER

• ZENER DIODE

6. 6. This is a type of semiconductor in which the flow of current can be controlled through a base or gate terminal. It is usually used for electronic switching or amplifiers.

• TRANSFORMER

• TRANSISTOR

• DIODE

• RELAY

7. 7. This consists of usually two coil windings which usually share a magnetic core. It is used to convert an AC source or signal into another AC source or signal with the same power (ideally) but different voltage and current.

• CAPACITOR

• DIODE

• TRANSFORMER

• TRANSISTOR

8. 8. This is a special type of diode that breaks down when a critical reverse voltage is applied. It is most commonly used to regulate voltage.

• TRANSFORMER

• DIODE

• RESISTOR

• ZENER DIODE

9. 9. This is a special type of diode that lights up when a small voltage is applied. They are usually used as indicators or in numerical or alphanumerical displays.

• LED

• LCD

• LAD

• PLASMA

10. 10. This is a type of display that uses tiny polarized crystals that align when current is passed through them. Used in conjuction with a polarized lens they darken when energized. They are very popular in watches, calculators, and lap-tops.

• PLASMA

• LCD

• LED

• OLDE