The power of the resistance is determined by the volume of the resistance

A certain size corresponds to a certain power, generally speaking, the size is the size of the body, because coating the outside of the insulation paint products from different manufacturers will have a little different.

The Numbers represented by the color ring are: black 0, brown 1, red 2, orange 3, yellow 4, green 5, blue 6, purple 7, gray 8, and white 9. The multiplier represented by the color of the color ring: black X1, brown X10, red X100, orange X1K, yellow X10K, green X100K, blue X1M, purple X10M, gray X100M, white X1000M, gold X0.1, silver X0.01. The error grade of color representation of color ring: gold 5%, silver 10%, brown 1%, red 2%, green 0.5%, blue 0.25%, violet 0.1%, gray 0.05%, colorless 20%.

The first five rings of the six-ring resistance are read as five-color ring resistance, and the sixth ring is the temperature coefficient.

The first three digits are the significant digits, the fourth digit is the multiplier, and the fifth digit is the error level.

For example: brown-red black gold 120X1= 120ohm error plus or minus 5% brown-red black orange brown 120X1K=120K error plus or minus 1% black brown black silver grey 010x0.01 =0.1 error plus or minus 0.05%

The first two digits are significant, the third digit is the multiplier, and the fourth digit is the error level.

For example: brown-red black gold 12X1=12 ohms error plus or minus 5% red red orange silver 22X1K=22K error plus or minus 10% yellow purple gold 47X10K=470K error plus or minus 5%

What is the power of the resistance?

I know the resistance power is 1//16w, 1/8w, 1/4w, 1/2w, 1w, 2w, 3w. Say their size is in order from small to large row. How exactly do you know their wattage? I read on the Internet that some people say that the power can be distinguished by their length, the length of 3MM is 1/8w and the length of 5MM is 1/4w, so it seems that the length of 8MM is 1/2w, 1cm long 1W and 1.5cm long 2W, is that right? Ask ace to give directions. The traditional resistance is divided according to the volume size. Generally, the minimum resistance is 1/8w. The actual size is the same as 1/6w.