KDP categories · Top KDP authors
Electromagnetic Theory: Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Electromagnetic Theory, updated Nov 2, 2026: median price $6.99, median 4 reviews, average rating 4.4 and a KDPTop opportunity score of 27/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $9.99 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 15% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 4% of the parent category Electrical & Electronics (113), one of the easier corners under it.
- Its review barrier is lower than in 90% of Kindle eBooks categories: the median best seller has only 4 reviews, so new books can chart with few.
- 15% of its best sellers came out in the last 90 days, more than in 76% of Kindle eBooks categories: readers here keep buying new titles.
Top 10 Electromagnetic Theory best sellers
-
Scientific American September 2026
- List rank#1
- Price$6.99
- Rating4.8
- Reviews13
-
Scientific American October 2026
- List rank#2
- Price$6.99
- Rating4.2
- Reviews7
-
Scientific American June 2026
- List rank#3
- Price$6.99
- Rating4.4
- Reviews42
-
Scientific American November 2026
- List rank#4
- Price$6.99
- Reviews-
-
The Body Electric: Electromagnetism and the Foundation of Life
- List rank#5
- Price$12.99
- Rating4.6
- Reviews1,571
-
Electrical Engineering Fundamentals: A Clear and Practical Introduction to Core Concepts with Visual Explanations and Real-World Applications
by Mason R. Hayes
- List rank#6
- Price$9.99
- Rating4.6
- Reviews147
-
Electrodynamics (Chicago Lectures in Physics)
by Fulvio Melia
- List rank#7
- Price$3.99
- Rating4.5
- Reviews23
-
Scientific American May 2026
- List rank#8
- Price$6.99
- Rating4.0
- Reviews1
-
Scientific American July/August 2026
- List rank#9
- Price$6.99
- Rating4.7
- Reviews8
-
Physics of Electricity and Magnetism: A Clear and Practical Guide to Electric Fields, Circuits, Magnetic Fields, Electromagnetic Induction, Maxwell’s Equations, and Electromagnetic Waves
- List rank#10
- Price$2.99
- Reviews-
FAQ
Is Electromagnetic Theory a good niche for Amazon KDP?
Its KDPTop opportunity score is 27/100, which makes it highly competitive. The median best seller has 4 reviews and sells for $6.99.
How many reviews do you need to rank in Electromagnetic Theory?
The median best seller has 4 reviews, and 80% of them have fewer than 100.
What do Electromagnetic Theory best sellers cost?
The median price is $6.99; half of the best sellers are priced between $4.99 and $9.99.
Can new books break into Electromagnetic Theory?
15% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.