Trivia

Hard

Electronic Resistors Are Commonly Distinguished With What Markings?

Raised Dots
Serial Numbers
Colored Bands
Unique Wire Leads
Three electrical resistors showing different colors of identification bands.
Afrank99/Wikimedia

Answer: Colored Bands

If you’ve ever peered closely at the resistors found on the interior parts of many of your household electronics, you may have noticed their tiny stripes. Those color bands, known formally as the Electronic Color Code, serve to indicate the resistor’s resistance value.

The system was developed in the 1920s by the Radio Manufacturers Association (an organization now known as the Electronic Industries Alliance) to help easily distinguish the values between otherwise often indistinguishable resistors. The color and order of the bands on a standard four-band resistor serve to indicate significant figures of the resistor’s value (the first two bands), as well as the decimal multiplier (the third band), and the tolerance of the resistor (the fourth band). To a layman, the band system seems quite arcane, but to a well-versed professional or serious hobbyist, the band system is second nature.

While this system of color-coded bands has prevailed for the better part of a century now (and will likely continue to do so for non-surface-mount resistors), the advent of tiny surface-mount resistors—often hardly bigger than a grain of rice—has led to an increase in alpha-numeric coding in place of the banding method.

Trivia

Hard

The First Sunday Newspaper In The World Was?

Trivia

Hard

Sci-Fi Classic Dune Was Published By A Publisher Specializing In?

Trivia

Easy

What Appears In Every Single Scene Of The Movie Fight Club?

Trivia

Hard

The Composition Of The Iconic “Bliss” Windows XP Wallpaper Was Only Possible Because Of?

Trivia

Hard

Hong Kong Cinema Was Inadvertently Popularized In The West By?

Trivia

Easy

In The Advertising World, The Equivalent Of Winning An Oscar Is Winning A?

Trivia

Hard

Listerine Mouthwash Is Named After?

Trivia

Hard

Photo Lab Printers Are Calibrated Using A Tool Known As A?

Trivia

Hard

Video Game Company Activision Was Sued By Which Of These Dictators?

Trivia

Easy

The Most Covered Beatles Song Of All Time Is?