The E Power chord is a two-note chord made up of E and B. It is built from a root and perfect fifth.
Construction
| Note | Interval | Degree |
|---|---|---|
| E | Root | 1 |
| B | Perfect 5th | 5 |
E Power Inversions

| Position | Notes |
|---|---|
| Root Position | E – B |
| 1st Inversion | B – E |
| 2nd Inversion | — |
Key Signature
A chord has no key signature of its own, but the E Power is the tonic (I) chord of E Major, whose key signature has 4 sharps (F♯, C♯, G♯, D♯).
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of E Major
These are the triads built on each degree of the E major scale: