E series of preferred numbers

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/e-series-of-preferred-numbers

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the mathematical basis?Logarithmic progression with a constant ratio between successive values within each series
2. What is the primary application?Resistors, capacitors, inductors, and zener diodes
3. What is the E series of numbers used for in gadgets?The E series is a set of special numbers that helps makers choose the right values for parts like resistors and capacitors so gadgets work correctly.
4. How does the E6 series divide a decade of numbers?The E6 series splits a range from 1 to 10 into six evenly spaced steps, so each step is about 1.468 times the previous one.

Logarithmic progression: A sequence where each term after the first is found by multiplying the previous one by a fixed, non-zero number.
Decade: A range of numbers where the upper limit is ten times the lower limit (e.g., 10 to 100).
Interchangeability: The ability of components from different manufacturers to be used in place of each other.