Which electrical component is represented by two adjacent parallel lines, one of which is longer and thinner than the other?

The electrical component represented by two adjacent parallel lines, one of which is longer and thinner than the other, is a capacitor.

Here are the steps to identify it:

1. Look at the symbol: The symbol for a capacitor is two parallel lines. They are adjacent to each other. This symbol is used in circuit diagrams.

2. Check the lines: One of the lines is longer and thinner than the other. This is a key characteristic of the capacitor symbol.

3. Confirm: If the symbol matches these characteristics, then it represents a capacitor.

Capacitors are used in electrical circuits to store energy in an electric field. They are often used in filtering devices in power supplies, coupling signals between stages of amplifiers, and storing energy in flash lamps.